An 18th century house, remodelled as a castle in the 19th century, home of a branch of the Longfield family. In 1786 Wilson give a description of the house including that "the west front of this mansion presents a view of Cork Harbour". Valued at £85 in the mid 19th century and held by Mountifort Longfield in fee. Bence Jones writes that this house was burnt in the early 1920s and is now a ruin. A new house was constructed from the old stable courtyard and the family continued to live there for periods of time during the 20th century until Castle Mary was acquired by the Hurley family in 1978.