Thelma Sinclair (born 1930)Sinclair family✓Confirmed how we know thisVitalsBorn1930✓Confirmed how we know thisFamilyFatherRobert Hugh Sinclair (1863 to 1944)MotherPhyllis Sinclair (born 1911)Sources1940, ED 68-5, p.43, line 5View Thelma Sinclair's family tree · See this person in the family network · Find how you are related