sentences:  He joined Sunderland in May 1907, playing 24 games, before moving on the following year to Northampton Town, with whom he won the Southern League championship in the 1908–09 season.He spent the 1910–11 season with Birmingham before returning to Scotland with Airdrieonians and Leith Athletic.Bonthron served as a lance corporal in the Gordon Highlanders and the Labour Corps during the First World War.