Notleymere (1885–89), also known as the Frank Norton estate, is a historic house located on the eastern shore of Cazenovia Lake in Cazenovia, Madison County, New York. The large, Shingle Style "summer cottage" was designed by architect Robert W. Gibson. It is a picturesque, asymmetrically massed, 3 1⁄2-story structure, sheathed in dark-stained wooden shingles and covered by a steeply pitched, multi-gabled, shingle roof.