Complex sentence: His former house, Woodtown Manor, near Dublin was for many years a welcoming place for Irish poets, writers and musicians and which was lent to the folk-pop group Clannad to be used as a backdrop for their many recordings.
Split into simpler sentences: His former house, Woodtown Manor, near Dublin was for many years a welcoming place for Irish poets, writers and musicians. He has lent his Irish houses to the folk-pop group Clannad to be used as a backdrop for their many recordings.