Baron Pierrepont of Ardglass in Antrim is in Baron Ireland.
In 1702 Gervase Pierrepont 1st Baron Pierrepont [aged 53] was created 1st Baron Pierrepont of Ardglass in Antrim in the Peerage of Ireland. Lucy Pelham Baroness Pierrepont Hanslape Buckingham by marriage Lucy Pelham Baroness Pierrepont Hanslape Buckingham.
On 22nd May 1715 Gervase Pierrepont 1st Baron Pierrepont [aged 66] died. Baron Pierrepont of Ardglass in Antrim, Baron Pierrepont of Hanslope in Buckinghamshire extinct.