Complex sentence: The census records does not include Co Cavan, where the name O'Mulpatrick was prominent in the 1641 rebellion in Belturbret and the occurrences of the name in the census are in baronies that border Co Cavan.
Split into simpler sentences: The census records does not include Co Cavan, where the name O'Mulpatrick was prominent in the 1641 rebellion in Belturbet. The occurrences of the name in the census are in baronies that border Co Cavan.