Barróg wrestling depicted on a 16th-century stone tomb slab in Killybegs, Co. Donegal. The slab is commonly believed to have been erected in the memory of Niall Mór Mac Suibhne, of the Mac Suibhne (McSweeney) clan.
The Royal Historical and Archaeological Association of Ireland
The Journal of the Royal Historical and Archaeological Association of Ireland, 1874, pp. 128-129