The Leavesden Parish Records noted that William was born in Abbots Langley in either 1888 or 1889. He was listed in the Leavesden Asylum Roll of Honour published in the 17th October 1914 edition of the Hertfordshire Advertiser, and at the time worked as an Asylum Attendant. He was first recorded in the Abbots Langley Parish Magazine Roll of Honour in November 1914, and was shown as serving with the Worcestershire Regiment.
William married Mary Rudman-McLeod on 3rd March 1915, possibly just before leaving for France. The Parish Magazine recorded that he had been reported missing/wounded in August 1916, and in June 1917 started to report that he had been Discharged Disabled.
His Medal Roll noted that at the time of discharge he had been promoted to the rank of Corporal and was serving with the 10th Worcester’s.
William Dean survived the War.