sentences:  It is a common surname in Ireland, where it is thought to often be a rough phonetic Anglicization of the Irish Gaelic sept of "Ó hOistín" who were followers of the MacDermots of Connacht, first Anglicized as Hestin and Histon, then later Hastings.The Irish version derives from a Norse Gaelic personal name Oistín.This family are most prominent in County Mayo, County Limerick, County Kerry and County Clare.