John Crosbie, 2nd Earl of Glandore PC, FRS (25 May 1753 – 23 October 1815), styled Viscount Crosbie between 1777 and 1781, was an Irish politician. Crosbie was the only surviving son of William Crosbie, 1st Earl of Glandore, by his first wife Lady Theodosia, daughter of John Bligh, 1st Earl of Darnley.
https://en.wikipedia.org/wiki/John_Crosbie,_2nd_Earl_of_Glandore