It was built in 1938 for Helen Porter Pryibil, daughter of William H. Porter, a partner at J.P. Morgan & Co. It was designed by Delano and Aldrich in the French Manor style.[1]
The French manor style mansion is located on the north side of Lattington Road in Glen Cove with views of the Long Island Sound and Connecticut.[2] The estate also contains a barn and a greenhouse, and is connected to a large tennis house.
The house was built on the site of her father's former mansion, also known as "Bogheid," that was demolished in 1930.[3]
At some point Prybil sold the 120-acre estate to the City of Glen Cove for $325,000.[4] The surrounding estate was converted into a municipal golf course, with Prybil retaining a life estate in the house, until her death in 1969. The city then sold the house to Arthur Young Associates, which returned it after a few years.[1]
In 1981 it was sold to Martin T. Carey, brother of New York Governor Hugh Carey, who renamed it Cashelmara. In 1985 it was the site of the Designers' Showcase event for interior decorators.[4] However, it afterwards became vacant and was left in disrepair.[1] In July 2021, the house was sold to a new owner who plans to rehabilitate the property.
The Society for the Preservation of Long Island Antiquities placed it on their list of endangered historic properties in 2010, but it has not been given a "landmark" designation by the City of Glen Cove.[5] While the mansion was inventoried by the New York State Parks and Recreation Division of Historic Preservation, in 1983, there has been no attempt for listing by the National Register of Historic Places.[1]
