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. Robert Doerr - Robert C. Doerr (c. 1914 December 5 2013) was an American politician and educator. He served as the 53rd Mayor of San Jose California from 1956 to 1958. Doerr was the city's oldest living mayor at the time of his death in December 2013.Doerr's grandfather Charles served on the San Jose City Council. His father Fred Doerr who was also a member of the city council also served as the Mayor of San Jose from 1928 until 1930.
A:
Office Holder