Background
Weir was born in Cambuslang, Lanarkshire, Scotland in 1887 the son of James Galloway Weir.
Weir was born in Cambuslang, Lanarkshire, Scotland in 1887 the son of James Galloway Weir.
He was a successful industrialist who financed Juan de la Cierva"s development of the autogyro. Weir was commissioned on 24 February 1906 as an officer in the 3rd (Renfrewshire) Volunteer Battalion, Princess Louise"s (Argyll and Sutherland Highlanders). On 1 April 1908 he transferred to the 3rd Highland (Howitzer) Brigade, Royal Field Artillery.
Weir was awarded the 24th Royal Aeronautical Club aviators certificate after flying a Bleriot Monoplane at Hendon on 8 November 1910.
In 1914 he was transferred to the Royal Flying Corps. He retired from the Royal Air Force on transfer to the Territorial Force.
In 1926 he helped form and became Chairman and Managing Director of the Cierva Autogiro Company. He later, in 1935, became a Director of the Bank of England.
He was also deputy director of the engineering company G & J Weir Limited.
Weir commuted to work daily in an autogyro, and Alfred Hitchcock worked the aircraft into the film The 39 Steps.