He holds the record as the youngest player to have played senior football at Richmond, being only 15 years and 328 days old upon debut in Round 1 of the 1910 season.[1] Despite this, he was the club's leading goalkicker in his debut year. He also gained some notoriety as a welterweight boxer between 1912 and 1915.[2]
Maguire was a well-known publican in Melbourne, operating the Bull and Mouth Hotel in Melbourne, and after 1932, Bellevue Hotel in Brisbane. He was father to five daughters; sometimes known as "the fabulous Maguires." Two daughters married members of the English nobility and Mary Maguire was briefly a Hollywood and British film actress in the late 1930s. Maguire died in England in 1950.[3]