From a quick look Thomas Saul married Bridget Byrne in St Luke's CoI in 1853.
Children:
Margaret born 1854 45 Plunket Street, Elizabeth born 1857 33 Coombe, Frances born 1860 58 Meath Street, Richard born 1863 26 Coombe, James Patrick born 1866 26 Coombe, Dorah born 1872 and I can't find Thomas' birth but he married Catherine Hogan (his address 108 Upper Leeson Street) in 1886. I think that's right.

Amy