William Sero enlisted on this day in 1916 in Deseronto. He claimed to have been born in Tyendinaga on July 28th, 1897 and information from the Mohawks of the Bay of Quinte is that his birth name was William Brant. If he was the son of Isaac Brant and Florence (née Sero), then his date of birth would have been in 1900 or 1901. However, he gave his next of kin as Maggie Woodman (mother).
William joined the 155th Battalion with the regimental number 636594. He had a dark complexion, brown eyes and black hair.