He was never defeated in the prize ring, and had a younger brother (Harry Broome) who became Heavyweight Champion of England.

The same source states: "Johnny was by trade a hammerman, and his work at the anvil strengthened and developed the muscles of his splendid chest and arms."

[1] Early fights took place with Jack Hunt, Tom Ellis and Bill Holwell, Welsh Champion, resulting in a draw and two victories for Broome.

[3] Subsequent fights took place against: Gallet on 5 February 1838; Charley Jones at Woore, Newcastle-under-Lyme on 21 May 1839; McGinty, near Glasgow on 1 July 1840; Joe Bostock in Warwickshire on 6 October 1840.

[7] Towards the end, Broome's reputation was tainted with scandal, as he was associated with some questionable transactions and a card fixing fraud.