Warner Sisters Net Worth: Estimates, Assets, Timelines

There is no single set of "Warner sisters" with a shared, documented net worth, the phrase turns up at least four distinct groups in press, company records, and public databases: the 19th-century American authors Susan Bogert Warner and Anna Bartlett Warner; Cass Warner (Cass Warner Sperling), the late U.S. filmmaker and founder of Warner Sisters Productions; Lavinia Warner, the British television producer who founded and runs the U.K. independent company WARNER SISTERS LIMITED; and the modern social-media brand "The Warner Sisters," built around the three daughters of Australian cricketer David Warner. Each is a real and verifiable entity. None of them share finances or family ties with one another, and no single authoritative wealth figure covers all of them. This article profiles each group transparently, gives honest confidence ranges where estimates are available, and flags where reliable wealth data simply does not exist in the public record.

Who counts as the "Warner sisters"? A quick disambiguation before we go further

The phrase creates genuine confusion because it refers to entirely unrelated people across two centuries and two continents. Before diving into financial profiles, it is worth being precise about who is, and is not, in scope. This article covers the four most commonly searched clusters. It does not cover Paris Warner or Sydney Warner, who share only a surname and are profiled separately on Celebrity Wealth Tracker (see the disambiguation section below). It also does not profile the Warner Bros. founding brothers (Harry, Albert, Sam, and Jack Warner), who are a separate and extensively documented subject.

Net worth at a glance

The table below gives the best available estimates and confidence levels for each Warner sisters cluster as of the article date (July 17, 2026). Figures marked "not estimable" reflect a genuine absence of public financial data, not a gap in research effort. Treating a non-estimate as a zero would be actively misleading, so those cells are left honest.

The 19th-century Warner sisters: Susan and Anna

Susan Bogert Warner (1819–1885) and Anna Bartlett Warner (1827–1915) are the original "Warner sisters" in American literary and cultural history. Both were born in New York and spent much of their lives at Constitution Island on the Hudson River, where they ran Sunday school classes for West Point cadets. Susan published under the pen name Elizabeth Wetherell and is best known for The Wide, Wide World (1850), one of the first American novels to sell more than a million copies. Anna is remembered chiefly as the lyricist of "Jesus Loves Me" (1860), which remains among the most widely recognized Christian hymns worldwide. Their combined literary output, novels, children's books, devotional writing, was substantial, and Susan's early commercial success was genuine: The Wide, Wide World was a bestseller on both sides of the Atlantic and went through multiple editions in its first decade. However, neither sister died wealthy by the standards of their era; financial pressures on their family were chronic, and translating their 19th-century earnings into a credible modern net worth is not a sound exercise. This site treats their wealth as a historical matter rather than a present-day estimate, and we recommend the Wikipedia entries and the Hymnary.org records for source-level biographical detail.

Cass Warner (Cass Warner Sperling): filmmaker, legacy custodian

Biography and career milestones

Cass Warner, born in 1948 and reported deceased in March 2024 per Legacy.com obituary notices, was the granddaughter of Harry Warner, one of the four brothers who co-founded Warner Bros. She built her own production identity, founding Warner Sisters Productions (later registered in the U.S. as Warner Sisters, Inc., with a Santa Barbara, California filing noted in business-directory records). Her most visible credit is The Brothers Warner (2007/2008), a feature documentary she wrote, directed, and produced about the founding of the Warner Bros. studio. The film was distributed through PBS American Masters programming and played festivals, where it received producing recognition including a note from the Producers Choice Honors. She also co-authored a book, Hollywood Be Thy Name: The Warner Brothers Story, drawing on family archives and interviews. These two projects, the documentary and the book, represent the core of her career's public commercial output.

Income streams and visible assets

Cass Warner's documented income streams were: documentary licensing and distribution fees (through PBS/American Masters and festival distribution); book advance and royalties from Hollywood Be Thy Name; any producing fees or backend arrangements on The Brothers Warner; and the ongoing operation of Warner Sisters Productions as a brand and production entity. There is no public record of real estate holdings, equity stakes in public companies, or inheritance from the Warner Bros. fortune that is traceable in open sources. Warner family wealth from the original studio was dispersed across multiple branches and generations across the 20th century; no public filing or court record in accessible databases shows Cass Warner as a named beneficiary of any trust or estate of significant scale. Her personal wealth, by all available indicators, derived from earned income as a working independent filmmaker rather than from inherited assets.

Estimate, confidence level, and methodology note

No major wealth-tracking outlet (Forbes, Bloomberg, Celebrity Net Worth) published a dedicated, sourced profile for Cass Warner at the time of our research (snapshot date: July 16–17, 2026). See CelebrityNetWorth – Cole Hauser (example of coverage of related family members; used to show coverage scope). Low-authority aggregator pages exist but lack original sourcing and should not be treated as reliable. Based on publicly verifiable career outputs, one documentary feature with PBS/festival distribution, one co-authored book from a mainstream publisher, and a small independent production company, a reasonable but explicitly unverified range would be low-to-mid six figures (USD) in net assets at the time of her death, consistent with the financial profile of a modestly successful independent documentary filmmaker with no documented major asset sales or inheritance windfalls. This estimate carries a very low confidence rating. Readers researching this figure for journalistic or legal purposes should consult probate records (California), the Santa Barbara business registry for Warner Sisters, Inc., and Warner Sisters Productions' distribution agreements directly.

The dedicated Paris Warner profile on Celebrity Wealth Tracker includes further context on the Warner family name in entertainment. For the full individual financial profile of Cass Warner, including any updates from estate filings post-2024, see the Paris Warner net worth page for related disambiguation and the site's individual profile section.

Lavinia Warner: the British TV producer behind WARNER SISTERS LIMITED

Biography and career milestones

Lavinia Warner is the founder and CEO of WARNER SISTERS LIMITED, a British independent television production company incorporated on March 4, 1981 (Companies House company number 01548819). This makes it one of the longer-running independent production companies in the U.K. sector. Her production and writing credits include the landmark BBC drama Tenko (a series set in a Japanese prisoner-of-war camp for women), Wish Me Luck (a World War II drama series), The Take, and The Runaway, among others. Her IMDb name page (nm0912516) documents these credits. The company's SIC code classifications on Companies House describe activities in artistic creation and management consultancy, reflecting both the creative and commercial sides of independent TV production. The firm has filed accounts continuously since incorporation, with the most recent filing period reviewed covering accounts made up to January 31, 2026 (due by October 31, 2026 per the Companies House registry snapshot taken July 16–17, 2026). Companies House (GOV.UK) – WARNER SISTERS LIMITED (company record and filing status) shows company no. 01548819 with accounts made up to 31 January 2026 and a filing due by 31 October 2026.

Income streams and visible assets

Lavinia Warner's income streams as documented in public records run through three channels: production fees and commissions earned by WARNER SISTERS LIMITED on commissioned TV projects; IP ownership or co-ownership of formats, series bibles, and completed productions; and any consulting or management income reported under the company's SIC categories. The company has been active for over four decades, which is an unusually long tenure for an independent UK production company and implies sustained commercial viability. However, the statutory accounts filed at Companies House for a private limited company of this size do not publicly disclose director remuneration in a granular way that would allow a precise personal wealth estimate. No real estate holdings, public equity positions, or disclosed personal asset sales appear in accessible public records for Lavinia Warner personally.

Estimate, confidence level, and methodology note

Lavinia Warner's personal net worth is not publicly confirmed and is not estimable from available sources with any reasonable confidence. WARNER SISTERS LIMITED's company-level net assets can in principle be read from the filed accounts at Companies House (company no. 01548819), but those figures represent corporate rather than personal wealth, and in private companies the relationship between company net assets and owner personal wealth depends on dividend history, salary history, and personal asset allocation, none of which is in the public record here. Readers who need a verified figure should pull the statutory accounts directly from Companies House and note the distinction between entity-level and personal wealth. Our confidence rating for any personal estimate is low. The dedicated Sydney Warner net worth profile on Celebrity Wealth Tracker handles a separately named individual and should not be conflated with Lavinia Warner.

The Warner Sisters social brand: David Warner's daughters

A more recent use of the phrase appears in Australian media and social platforms, where "The Warner Sisters" refers to Ivy Mae, Indi Rae, and Isla Rose Warner, the daughters of Australian Test cricket star David Warner and his wife Candice Warner. The account and brand are managed by their parents and was represented by TSA Talent (an Australian talent agency, per their talent listings page) at the time of research. A podcast episode featuring Candice and David Warner referenced approximately 200,000 Instagram followers for the account at the time of recording. The sisters are minors, and their "wealth" in any conventional sense is not applicable: what exists is a nascent social media brand with sponsorship and endorsement potential managed by their parents. No personal net worth figure is appropriate or estimable here, and none is offered. The brand's commercial value would depend on follower growth, engagement rates, brand partnership terms, and platform algorithm changes, all private and highly variable figures.

Comparing the four clusters: a side-by-side look and timeline

The timeline tells a consistent story: each cluster built its value through creative or media output rather than inherited financial capital (with the partial exception of Cass Warner's family legacy, which provided cultural credibility more than direct monetary inheritance). The 19th-century sisters earned genuinely large sums by Victorian standards but died without significant accumulated wealth. Cass Warner leveraged family heritage into a documentary career but operated as a working independent filmmaker. Lavinia Warner built institutional value over four decades through a private company. The social-media sisters represent a brand asset of indeterminate value managed on behalf of minors.

Disambiguation: Paris Warner, Sydney Warner, Sydney Winbush, Sydney Webb, and Sydney Wells

Because the phrase "Warner sisters" and the name "Sydney Warner" generate overlapping search traffic with several other individuals, this section provides brief identifying notes for each. None of the people below are related to the clusters documented above. Each has a separate dedicated profile on Celebrity Wealth Tracker. For a separate profile of that name, see the Sydney Wells net worth profile on Celebrity Wealth Tracker. See the Sydney Winbush net worth profile on Celebrity Wealth Tracker for that individual's separate page and financial notes.

• Paris Warner: A working actress with film and television credits. Low-authority aggregator pages publish net worth figures for Paris Warner, but no high-quality sourced wealth reporting (Forbes, Bloomberg, or equivalent) was located during our July 2026 research. She is a distinct individual from any of the Warner sisters groups above. See the Paris Warner net worth profile on Celebrity Wealth Tracker for her individual financial and career summary.
• Sydney Warner: A separately named individual — distinct from Lavinia Warner, Cass Warner, and the social-media brand. The Sydney Warner net worth profile on Celebrity Wealth Tracker documents her career and available financial estimates independently.
• Sydney Winbush: An actress known for recurring television roles. Sydney Winbush shares only a first name with the search cluster here and has no connection to the Warner family or surname. Her individual profile is documented on Celebrity Wealth Tracker under the Sydney Winbush net worth page.
• Sydney Webb: A separately profiled individual on Celebrity Wealth Tracker. Not related to any Warner-surname individual in this article. See the Sydney Webb net worth profile for career and wealth details.
• Sydney Wells: Another individually profiled person on Celebrity Wealth Tracker, unrelated to the Warner clusters above. See the Sydney Wells net worth profile for that person's financial summary.

Why net worth estimates for these individuals vary so much (and what that means for you)

Net worth estimates for people like those covered here, independent filmmakers, private company founders, 19th-century authors, and social-media brand figures, diverge more than estimates for major pop stars or Fortune 500 executives for several compounding reasons. Private assets are the biggest driver: when someone's wealth is held in a private company (as with Lavinia Warner's WARNER SISTERS LIMITED), the company's net assets are only visible in statutory filings that do not itemize personal draws, dividends, or off-balance-sheet holdings. Royalties compound the problem because streaming and licensing royalties for older TV productions (Tenko, Wish Me Luck) or book rights (The Wide, Wide World adaptations) are paid under confidential contracts; you can know a work was commercially successful without knowing the rights-holder's cut. Unreported income from consulting, speaking, and personal appearances leaves no public trace. And for historical figures like Susan and Anna Warner, applying any kind of present-value conversion to 19th-century earnings involves assumptions about inflation, monetary systems, and wealth distribution that produce ranges spanning orders of magnitude.

The practical upshot: treat any single-number estimate for individuals in this article with caution. When a range is given, the range itself is the honest answer, collapsing it to a point estimate implies precision that does not exist in the underlying data. Celebrity Wealth Tracker's approach is to display confidence levels alongside figures and to update profiles when new verifiable data (court filings, company accounts, disclosed transactions) becomes available.

How to verify these figures and where to look next

For Lavinia Warner and WARNER SISTERS LIMITED, the single best public source is Companies House (GOV.UK). Pull the full filing history for company number 01548819 directly from the Companies House register, statutory accounts filed there are primary documents and will show company-level net assets, though not personal director pay unless the company falls above the disclosure threshold. For Cass Warner Sperling, the most useful verification routes are California probate court records (Los Angeles or Santa Barbara County, depending on domicile), the Santa Barbara business registry for Warner Sisters, Inc. (referenced in BizProfile aggregator records), and PBS American Masters' program notes for The Brothers Warner (which document distribution arrangements). For the literary Warner sisters, the Wikipedia entries for Susan Bogert Warner and Anna Bartlett Warner, and the Hymnary.org author record for Anna, are reliable starting points; Constitution Island Association materials also hold biographical primary sources. For the social-media Warner Sisters, the TSA Talent representation page and the account's own media kit (available from account owners) are the primary commercial-value documents.

On Celebrity Wealth Tracker, the most relevant connected profiles are Paris Warner net worth and Sydney Warner net worth for individuals who share search traffic with this topic. The Sydney Winbush net worth, Sydney Webb net worth, and Sydney Wells net worth profiles handle the remaining disambiguation candidates documented above. For that individual, see the Sydney Webb net worth profile for a dedicated disambiguation and financial summary. If your interest is in Warner Bros.-adjacent wealth (the founding Warner brothers or their direct descendants), the site's broader entertainment-family profiles section is the appropriate next click.

Article date, confidence summary, and a note on sources

This article reflects research conducted on July 16–17, 2026. Primary sources consulted include: PBS American Masters program notes for The Brothers Warner; Companies House (GOV.UK) company record for WARNER SISTERS LIMITED (company no. 01548819); the WARNER SISTERS company website (warnersisterstv.com); IMDb production and name pages (Lavinia Warner, nm0912516; The Brothers Warner, tt1023499); Wikipedia biographical entries for Susan Bogert Warner and Anna Bartlett Warner; Hymnary.org author attribution for Anna Bartlett Warner; TSA Talent representation listing for The Warner Sisters; Legacy.com obituary for Cass Warner (1948–2024); Producers Choice Honors biographical note for Cass Warner; and BizProfile listing for Warner Sisters, Inc. (Santa Barbara, CA). No dedicated authoritative wealth profile was found for Cass Warner or Lavinia Warner on major financial-journalism outlets during this research window; that absence is itself a data point documented transparently here. Confidence ratings in the snapshot table above summarize the quality of evidence behind each figure: very low and low ratings should be read as a signal to consult primary records rather than to rely on this or any other secondary summary. Figures will be updated as new public records become available.