Ernest Duncan Sinclair
- Born 13 November 1893, Seaward Bush, Southland, New Zealand
- Died details of death unknown
- Last rank Sergeant
- Service number 49934
- Served In Reinforcements J Company, New Zealand Rifle Brigade
- Next of Kin Mrs Hilda Sinclair (wife), Bluff
- Pre-war occupation Tally Clerk
- ReligionMethodist
- Enlisted21 February 1917
- Embarkationaboard HMNZT 86, Maunganui, departed 12 June 1917, disembarked 15 August 1917, Plymouth, Devon, England
- Theatres of operationWestern European 1918
- Periods of service120 days in New Zealand and two years 14 days overseas in Western Europe. Total service of two years and 134 days
- Returned to New Zealandaboard Waimana, 26 June 1919
- Discharged23 July 1919 on termination of period of engagement
- AwardedBritish War Medal and Victory Medal
Photograph supplied by Te Rūnaka o Awarua Charitable Trust