Complex sentence: Forced off their lands in 1654 by Oliver Cromwell, The head of this family still uses the title The O'Higgins of Ballynary or Lord of Ballynary although the family have not lived there since the 17th century.
Split into simpler sentences: Forced off their lands in 1654 by Oliver Cromwell. The Chief of the O'Higgins Clan today uses the courtesy title of "The O'Higgins of Ballynary" or "Lord of Ballynary" although his family have not lived there since the 17th century.