The Duke of Omnium Fund
Historical FunderNew York, New York · EIN 13-3740798 · Private foundation
Half of its grants to organizations were between $1,000 and $5,000.
How to apply
The foundation filed the following application information (Form 990-PF Part XV, tax year 2025):
| Contact | co Sullivan Cromwell LLP |
|---|---|
| Address | 125 Broad Street, New York NY 100042498 |
| Phone | 2125584000 |
| Form and materials | By Correspondence - Outline Purpose |
| Deadlines | None |
| Restrictions | Requests for individual grants not eligible |
Copied as filed. Deadlines on a tax return describe the foundation's usual process; they are not confirmation of a current open cycle.
What it funds
Share of grant lines on the latest return, classified from the purpose each grant states.
Where it gives
45% of grants went outside New York.
Grants paid in tax year 2025
| Recipient | Location | Purpose | Amount |
|---|---|---|---|
| President and Fellows of Harvard College | Cambridge, MA | Charitable Purposes | $54,000 |
| Rare Book School | Charlottesville, VA | Charitable Purposes | $35,000 |
| Thomas Jefferson Foundation | Charlottesville, VA | Charitable Purposes | $25,000 |
| Metropolitan Museum of Art | New York, NY | Charitable Purposes | $12,000 |
| American Friends of the Musee dOrsay | New York, NY | Charitable Purposes | $10,000 |
| Harvard Business School | Boston, MA | Charitable Purposes | $10,000 |
| Henry L Ferguson Museum | Fishers Island, NY | Charitable Purposes | $10,000 |
| Rising Phoenix Conservation Inc | Sausalito, CA | Charitable Purposes | $10,000 |
| NextGen Face Inc | New York, NY | Charitable Purposes | $5,000 |
| University of Virginia | Charlottesville, VA | Charitable Purposes | $5,000 |
| Holderness School | Plymouth, NH | Charitable Purposes | $2,500 |
| Island Health Project | Fishers Island, NY | Charitable Purposes | $2,500 |
| National Education Equity Lab | New York, NY | Charitable Purposes | $2,500 |
| Speare Memorial Hospital | Plymouth, NH | Charitable Purposes | $2,500 |
| Ubuntu Education Fund | New York, NY | Charitable Purposes | $2,500 |
| St Bernard's School | New York, NY | Charitable Purposes | $2,000 |
| American Friends of Versailles | Chicago, IL | Charitable Purposes | $1,000 |
| Chapin School | New York, NY | Charitable Purposes | $1,000 |
| Dartmouth College | Hanover, NH | Charitable Purposes | $1,000 |
| Harvard College | Cambridge, MA | Charitable Purposes | $1,000 |
| Lakes Region Community Services | Laconia, NH | Charitable Purposes | $1,000 |
| Squam Lakes Association | Holderness, NH | Charitable Purposes | $1,000 |
| Squam Lakes Conservation Society | Holderness, NH | Charitable Purposes | $1,000 |
| Squam Lakes Natural Science Center | Holderness, NH | Charitable Purposes | $1,000 |
| The Lighthouse Works | Fishers Island, NY | Charitable Purposes | $1,000 |
| Tuxedo Park School | Tuxedo Park, NY | Charitable Purposes | $1,000 |
| Walsh Park | Fishers Island, NY | Charitable Purposes | $1,000 |
| Wheaton College | Norton, MA | Charitable Purposes | $1,000 |
| Fishers Island Conservancy | Fishers Island, NY | Charitable Purposes | $500 |
| Island Community Center | Fishers Island, NY | Charitable Purposes | $500 |
| Fishers Island Fire Department | Fishers Island, NY | Charitable Purposes | $250 |
| Fishers Island Library Association | Fishers Island, NY | Charitable Purposes | $250 |
| Fishers Island Union Chapel | Fishers Island, NY | Charitable Purposes | $250 |
| Island People's Project | Fishers Island, NY | Charitable Purposes | $250 |
| The Brearley School | New York, NY | Charitable Purposes | $250 |
Giving by year
| Tax year | Grants paid | Grant lines |
|---|---|---|
| 2025 | $204,750 | 35 |
| 2024 | $380,440 | 32 |
| 2023 | $370,940 | 35 |
Sources
- IRS Form 990-PF, tax year 2025, filed May 13, 2026 - IRS e-file batch, object ID 202611339349102806
- IRS Tax Exempt Organization Search for EIN 13-3740798
- Profile updated Nov 5, 2026
Facts on this page come from the foundation's own IRS Form 990-PF filings as published by the IRS. Grantvello does not know whether a foundation is accepting proposals right now: a past grant is not an open opportunity. Always confirm current guidelines with the funder before applying.