Please answer the following question: Thomas Roberts Ferguson (December 1818 September 15 1879) was an Ontario businessman and political figure. He represented Simcoe South in the Legislative Assembly of Ontario from 1867 to 1873 and Cardwell in the Canadian House of Commons as a Conservative member from 1867 to 1872. Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
A:
Office Holder