Complex sentence: Margaret O'Carroll (Mairgréag Ní Chearbhaill), was a Gaelic Irish noblewoman (d.1451 in Ireland) remembered for her hospitality, as she earned the nickname Mairgréag an Einigh (' Margaret of the Hospitality').
Split into simpler sentences: Margaret O'Carroll (Mairgréag Ní Chearbhaill), was a Gaelic Irish noblewoman (died 1451 in Ireland). She is remembered for her hospitality, and nicknamed Mairgréag an Einigh (' Margaret of the Hospitality').