George Terrill Thresher was born in Southampton, Hampshire, England on 1 June 1886. He was the son of George Samuel Thresher (b. 1853), an engine fitter, and Catherine Terrill (b. 1855).
Both George's parents were natives of Southampton and had married in 1878, producing at least ten children. George's known siblings were: Ethel Kate (b. 1878), Lilian Harriet (b. 1881), Ada (b. 1883), Emily Martha (b. 1884), Edith Ellen (b. 1888), John Thomas (b. 1890), Alice Hilda (b. 1892), Ernest Sydney (b. 1893) and Cordelia Florence (b. 1895).
George appears on the 1891 census living with his family at 50 Mount Pleasant, St Mary, Southampton but would appear at number 36 on the same street at the time of the 1901 census, George having left school by this time and described as an errand boy. When George appeared on the 1911 census he was described as an unmarried seaman for the White Star Line and still living with his family, his mother having been widowed in 1903, at 36 Mount Pleasant Road, Southampton.
When he signed-on to the Titanic, on 6 April 1912, George gave his address as 36 Mount Pleasant Road, (Southampton). He had transferred from the Oceanic. As a fireman he received monthly wages of £6.
Thresher survived the sinking, in which lifeboat is uncertain.
George returned to England and continued working at sea. He remained a bachelor for much of his life before he resettled in northwest England and married in Gateshead, Durham in 1937 to Jane Fawcett (b. 1888).
He continued working at sea in the Merchant Navy and was working aboard the S.S. Parkhill, a cargo ship, when that vessel was torpedoed on 18 November 1939 1 off the coast of Aberdeen. The Parkhill had evaded the first missile launched and steamed on. She succumbed less than an hour later to a second attack from U-18 and George Thresher became one of nine fatalities.
George's widow never remarried and remained in Gateshead where she died in 1964.