What is "magheraboy"

Magheraboy is a barony in County Fermanagh, Northern Ireland. To its east lies Lower Lough Erne, and it is bordered by three other baronies in Northern Ireland: Lurg to the north; Tirkennedy to the east; and Clanawley to the south It also borders two baronies in the Republic of Ireland: Tirhugh to the north; and Rosclogher to the south.