Moloney, ó Maoldomhnaigh
A Gaelic surname meaning descendant of Maoldomhnaigh, which personal name meant ‘servant of the Church’. A sept of Dál gCais who were chiefs of a district in the barony of Tulla, Clare. ó Maolfhachtna meaning ‘a servant of St Facthtna’, a sept of Tipperary has been assimilated into Moloney. In 1890 Moloney was the ninety-seventh most numerous surname and the estimated number of bearers was 8,300. In that year the surname was chiefly found in Limerick, Clare, Tipperary and Waterford.