Background
Crosbie was the son of Maurice Crosbie, 1st Baron Brandon, by Lady Elizabeth Anne, daughter of Thomas FitzMaurice, 1st Earl of Kerry.
Crosbie was the son of Maurice Crosbie, 1st Baron Brandon, by Lady Elizabeth Anne, daughter of Thomas FitzMaurice, 1st Earl of Kerry.
He was returned to the Irish House of Commons for Ardfert in 1735, a seat he held until 1762, when he succeeded his father in the barony and entered the Irish House of Lords. In 1770 he was appointed Custos Rotulorum of Kerry. He was created Viscount Crosbie, of Ardfert in the County of Kerry, in 1771, and was even further honoured when he was made Earl of Glandore, in the County of Cork, in 1776.
Lord Glandore was twice married.
The Countess of Glandore died in September 1787.