The most famous family to live on the lands at Waterville were the Falkiner family who became Baronets of Abbotstown in 1812.
Ion Trant Hamilton was ennobled by Queen Victoria as Baron HolmPatrick and Abbotstown House remained the seat of the Barons until 1947 when James Hans Hamilton, 3rd Baron HolmPatrick (1928-1991) lost part of his lands under a Compulsory Purchase Order to allow for the building of James Connolly Memorial Hospital.