John Mullan, more commonly known as Shane Crossagh O'Mullan, was an Irish rapparee/outlaw, who was executed in the 1720s at the Diamond, in Derry city.
[1] Shane Crossagh and his family, lived in Tullanee, Faughanvale, in the barony of Keenaght, County Londonderry.
[1] When Shane was later caught cutting grass at the property, the family in an attempt to escape punishment relocated to Lingwood in the mountains above Claudy.
[1] With Lingwood as his base, Shane would form a gang made up of people who were either greedy for plunder or for vengeance,[1] becoming rapparees carrying out attacks and raids throughout the Sperrins mountain range.
Shane was eventually caught and hanged with his sons in the Diamond in Derry in the 1720s, being possibly interred between 1725 and 1735 in the cemetery of Banagher.