Mayor of Strathfield 1920-21, 1921-1922
William Pilgrim served on Strathfield Council from 1914 to 1930. He was elected at an ordinary Council election held on 31 January 1914. He resigned in October 1930 after 17 years service. Following his resignation, a by-election was held in November 1930 and William Cosgrove was elected.
Pilgrim Park in Strathfield is named after him.