Glenays, also known as Leighton House, was an historic home which was located in Radnor Township, Delaware County, Pennsylvania.

[4] It was a three-story, stucco over stone Italian Villa style dwelling built in three sections.

[5] For many years, the estate was the home of Archibald R. Montgomery and later, the residence of Mr. and Mrs. Alexander Biddle.

In 1974, it was used as the "Designers' Show House" by the Philadelphia Vassar Club to benefit their scholarship fund.

As of 2021, the land was subdivided, and the mansion demolished to make way for new residential construction.