P. H. McCarthy - Patrick Henry McCarthy (March 17 1863 July 1 1933) generally known as P.H. McCarthy and sometimes more jocularly as Pinhead was an influential labor leader in San Francisco and the 29th Mayor of the City from 1910 to 1912. Born in County Limerick Ireland he apprenticed as a carpenter in Ireland before coming to the United States in 1880. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
A:
Office Holder