Background
He was the eldest son of Sir William Osborne, 8th Baronet and wife Elizabeth née Christmas.
He was the eldest son of Sir William Osborne, 8th Baronet and wife Elizabeth née Christmas.
Sir Thomas sat as a Member of Parliament in the Irish House of Commons for Carysfort between 1776 and 1797 and served as High Sheriff of County Waterford in 1795, having succeeded to the baronetcy upon his father"s death in 1783.