St. Mary's Abbey, Dublin St. Mary's Abbey, Dublin St. Mary's Abbey was a former Cistercian abbey located near Abbey Street in Dublin, Ireland. Its territory stretched from the district known as Oxmanstown down along the River Liffey until it met the sea. It also owned large estates in other parts of Ireland. It was one of several liberties that existed in Dublin since the arrival of the Anglo-Normans in the 12th century, which gave it jurisdiction over its lands. The abbey was founded by the Irish king Máel Sechnaill mac Máele Ruanaid (died 862) in 846, according to the Annals of the Four Masters.
Waterville, Dublin Waterville, Dublin Waterville () is a modern housing development that forms a remote suburb of Dublin city, within Fingal, Ireland. The developments were built between 2002 - 2008 on the edge of the Abbotstown demense, on the boundary between Blanchardstown and Castleknock. The development lies within the Barony of Castleknock in the historic County Dublin. The area was developed by Granbrind Ltd on land acquired from the Eastern Health Board. The land was previously owned successively by the Barons of Castleknock, Baronets of Abbotstown and Barons Holmpatrick. Historically these lands formed the principal seat in the civil parish and barony