James Kerr (September 24 1790 December 23 1850) was a doctor politician Senator in Missouri soldier surveyor and Congressman in Texas who was active in the establishment of the Republic of Texas. 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