Complex sentence: He was born in Derry, lived briefly there and in Donegal, before moving to Dublin where he was educated at Synge Street CBS and at UCD, where he studied English, and History and Political Science for a BA degree.
Split into simpler sentences: He was born in Derry, lived briefly there and in Donegal, before moving to Dublin. There he was educated at Synge Street CBS and at University College Dublin, where he studied English, and History and Political Science for a BA degree.