Fitzwilliam (Barony)
A peerage of the Kingdom of Great Britain.
Letters patent issued on Thu 19th Apr 1742
To William Fitzwilliam as Hereditary peerage (already peer of Ireland).
Holders
| Number | Surname | Forenames | Held from | Held to |
|---|---|---|---|---|
| 1st | Fitzwilliam | William | Thu 19th Apr 1742 | Tue 10th Aug 1756 |