Byron was the elder son of Col. Wilfrid Byron, of Perth, Western Australia, and of Sylvia Mary Byron née Moore, of Winchester, England, the only daughter of the Reverend C. T. Moore.
A farmer and grazier in Australia from 1921, he served in the Second World War as a Lieutenant of the RANVR, from 1941 to 1946, and succeeded his first cousin once removed, the Rev.
He belonged to naval and military clubs in Perth, Western Australia.
Lord Byron died on 1 November 1983 in Mount Claremont, Western Australia, and was succeeded by his fifth cousin, Lt. Col. Richard Geoffrey Gordon Byron, 12th Baron Byron DSO (born 1899).
He married Pauline Augusta Cornwall (d.1993), daughter of T. J. Cornwall of Wagin, Western Australia, in 1931, and they had one daughter, the Hon.