Registered (freeBMD) as DOW, William A S (Q1 1885, Henstead), this man's married name (and his childrens') is SCOTT-DOW. His military record is filed under this in the WW1 Service Records (WO 363):

William Albert SCOTT-DOW, born Norfolk, a Chauffeur living in Gerrards Cross, Bucks, married Hilda TRENDELL in 1915. Children: Arthur Robert (1916) & Beryl (1919). Enlisted (age 31yr) June 1916, discharged 1919. Reg No 192932.

Anc****y, SCO, pages 52710 to 52744