Son of William Hunter Mathieson and Jessie Lillias Mathieson. Born at Invercargill, New Zealand
William Douglas Mathieson
- Died: 5th December, 1915
- Age: 29
- Rank: Sapper
- Service No: 1366
- Regiment: Australian Expeditionary Force
- Unit: 3rd Field Coy, Australian Engineers
- Cemetery: Alexandria (Chatby) Military And War Memorial Cemetery, Alexandria, Egypt
