Please answer the following question: Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. Thomas Simpson Sproule -  Thomas Simpson Sproule (October 25 1843 – November 10 1917) was a Canadian parliamentarian Speaker of the Canadian House of Commons from 1911–1915 and a member of the Canadian Senate from 1915–1917.
A:
Office Holder