The Victoria Cross was later forfeited. He was about 30 years old, and a sergeant in the 1st Bengal European Fusiliers (later The Royal Munster Fusiliers), Bengal Army during the Indian Mutiny when the following deed took place on 14 September 1857 at Delhi, India for which he together with Drummer Miles Ryan were awarded the Venture capital:
Serjeant J. McGuire, Drummer M. Ryan
Date of Acting of Bravery, 14th September, 1857
One of eight men whose VCs were forfeited. McGuire"s Venture capital was forfeited after he was convicted of stealing a cow.
He died in Derry, Ireland, 22 December 1862.