[2] He was educated at Trinity College Dublin until 1761[3] and when his father died seven years later, he inherited the latter's estates.
[4] Brooke was unmarried and following his death was succeeded by his nephew Thomas Grove, who thereupon assumed his uncle's surname.
[5] Brooke entered the Irish House of Commons in 1776, having been elected for Donegal Borough.
[1] In 1783, he stood successfully for both County Donegal as well as Augher, choosing to sit for the former constituency.
[1] He represented it until the Act of Union 1801 and then gained a seat in the British House of Commons for the new established constituency Donegal until 1802.