Letters patent issued on Wed 20th Apr 1661

To Oliver Fitzwilliam

A peerage of the Kingdom of Ireland , during the reign of Charles II

Previously known as Viscount Fitzwilliam in the Peerage of the Kingdom of Ireland.

Ordinality on date:

Person prefix:

Person suffix:

Previous of title: false


  1. Earl of Tyrconnel


C 231/7 p. 99; LP 13 Chas. II, pt. 2 (C 66/2957) no. 9; dated 20 Apr. 1663 (sic) in Peerage, p. 10