George Alexander "Alex" Forbes was born on January 2, 1897 in Hespeler, Ontario to parents Amy Victoria Ellis (1868-1941) and George Duthie Forbes (1860-1934).

Forbes' father, George Duthie Forbes, was elected the mayor of Hespeler in 1901.

During the First World War, George Alexander Forbes was drafted into the 1st Depot Battalion of the Western Ontario Regiment on April 26, 1918 in London, Ontario. He then transferred to the Royal Flying Corps.

On January 19, 1922 George Alexander Forbes married Millicent Lyall Buck. Millicent and George had twin daughters, Millicent Elizabeth "Betty" and Margaret "Peg" Isabel, on July 10, 1924.

George was elected as a councilor of Hespeler in 1930.

After the death of his father, George Duthie Forbes, George Alexander Forbes became the director of a number of companies his father owned interest in.

George Alexander died in 1986 and was buried in New Hope Cemetery in Cambridge, Ontario.