Thomas Sadleir

Thomas Ulick Sadleir (15 September 1882 – 21 December 1957) was an Irish genealogist and heraldic expert. He was successively registrar of the Order of St Patrick, Deputy Ulster King of Arms and Acting Ulster King of Arms. Career Sadleir's first involvement with the office of arms at Dublin Castle was when he worked on an unpaid basis whilst an undergraduate at Trinity College, Dublin. He graduated in 1904, and was called to the bar in 1906. By 1913, he was working on a daily basis at the office, whilst practising as a barrister. In 1915 he was appointed registrar of the Order of St Patrick by George Dames Burtchaell, Deputy Ulster King of Arms. In practice, Sadleir carried out most of the day-to-day work of Ulster's office. In 1915, Sadleir wrote an unofficial 6th volume of the annual Georgian Society Records called "Georgian mansions in Ireland" along with Page Dickinson. It proved to be the last volume of the society's annual records until it was re-established as the modern Irish Georgian Society in 1958.