 In Ireland they were inaugurated in Kilmacrennan, County Donegal, where MacSuibhne Fanad became influential allies of the O'Donnell of Tyrconnell.The remains of the Sweeneys who went to Ireland are interred outside the walls of Castle Doe, Donegal.The historian James Logan, in "The Scottish Gaël", remarked how the Mac Swineys were notable for their hospitality.