Frederick Lothrop Ames Jr. (July 23, 1876 – June 19, 1921) was a Massachusetts financier and socialite.

The Ames' were fairly prominent in 19th century New England society, and had a major presence in small North Easton.

[2] In 1904, shortly after his marriage to Edith Cryder, Lothrop commissioned architects Douglas H. Thomas and J. Harleston Parker, later of the firm Parker, Thomas and Rice)[3] to design a mansion on the Easton-Brockton town line.

[4] The 50-room “Stone House Hill House” contained a gymnasium with glass-roofed indoor clay tennis court, marble swimming pool, squash court, garage, conservatory, barns and maintenance buildings.

[2] His funeral was held June 22 at the Unity Church of North Easton, which his family had attended for many years.