Complex sentence: John Colton (1320--1404) was a leading academic, statesman and cleric of the fourteenth century, who spent much of his later career in Ireland, where he held the offices of Treasurer of Ireland, Lord Chancellor of Ireland and Archbishop of Armagh.
Split into simpler sentences: John Colton (1320--1404) was a leading academic, statesman and cleric of the fourteenth century. He spent much of his later career in Ireland, where he held the offices of Treasurer of Ireland, Lord Chancellor of Ireland and Archbishop of Armagh.