Nicholson was born at Mikimiki, a short-lived sawmilling settlement ten miles north of Masterton, on the north island of New Zealand, the son of John Albert Nicholson and his wife Maria Mary (née Henderson).[1] He was educated at the Masterton Public and High Schools[1] and arrived in Australia in 1926 as a touring professional cycling representative and motorcycle stunt rider. Having competed successfully in three Australian states, Nicholson took up speedway racing at Maroubra and Penrith in New South Wales. In 1933 he became the first person in Australia to ride the infamous Wall of Death.[2]
After he trained to be an electrical engineer, Nicholson arrived in Queensland and established a radio and refrigeration business in Caboolture. He was later appointed company director of the Kern Corporation and retired from business in 1955.[2] Before he came to Australia, Nicholson was an excellent foot runner and bike rider and as a young man in western Queensland who "didn't mind a stoush" used to look forward to times when the boxing tent came to town so that he could show people of just what mettle he was made.
During World War II, Nicholson was a member of the Volunteer Defence Corps. He was stationed with the 6 Battalion Volunteer Defence Corps (Queensland) and was discharged in 1945 at the rank of Warrant Officer Class 2.[3]
On 4 August 1934, shortly before arriving in Queensland, Nicholson married Cecile Flloyd Smith (died 1987)[4] and together had two sons and two daughters. He died in December 1997[1] and was cremated at the Albany Creek Crematorium.[4]