Tadcaster (Viscountcy)

A peerage of the Kingdom of Great Britain.

Letters patent issued on Fri 19th Oct 1714

To Henry O'Brien as Hereditary peerage (already peer of Ireland).


Number Surname Forenames Held from Held to
1st O'Brien Henry Fri 19th Oct 1714 Thu 20th Apr 1741

Peerage extinct on Thu 20th Apr 1741 with the 1st holder .