Background
Born in Handsworth on the outskirts of Birmingham, England, in 1910, Brainsby was the son of Edith Anna (née Kingsford) and Arthur Todd Brainsby, a Baptist minister.
Born in Handsworth on the outskirts of Birmingham, England, in 1910, Brainsby was the son of Edith Anna (née Kingsford) and Arthur Todd Brainsby, a Baptist minister.
Brainsby studied at Auckland University College, graduating with a Bachelor of Arts in 1934, and a Bachelor of Laws and Diploma of Journalism in 1938.
The family emigrated to New Zealand in 1911. He also competed in the long jump, finishing in seventh place with a leap of 21 feet 6 1⁄2 inches (657 m). Following a career as a journalist for the Auckland Star, in 1952 he joined the Highland Park law firm of Melville Churton, which, in 1962, became Churton Brainsby & Hart.
Brainsby died in 1975 and he was cremated at Purewa.
Brainsby competed for New Zealand at the 1934 British Empire Games, where he won the bronze medal in the triple jump, with a distance of 47 feet 11 1⁄2 inches (1462 m). He won the triple jump title at the national athletics championships in 1934 and 1935, and was second in the same event but the leading New Zealander (behind Japanese athlete Kenshi Togami) in 1937.