Thomas George John
Thomas George John (1880-1946) of Alvis
1880 Born at Argyll Street, Pembroke Docks.
1904 Qualified as a Naval Architect
1915 Joined Siddeley-Deasy as Works Manager and Chief Engineer
1919 Purchased the American owned company Holley Brothers and Co and re-named it T. G. John to manufacture the 'Electra' range of engines