Built by Benjamin Dyer for his son Thomas in 1756, this mansion is believed to be the oldest extant house in Canton, Connecticut. The most famous resident of the house was William Edgar Simonds (1842-1903) who married Sarah Jane Mills, a descendant of Dyer. Simonds was a prominent patent attorney who was awarded the Congressional Medal of Honor for his heroics at the Civil War battle of Irish Bend, Louisiana. After his military service, he attended Yale University, was admitted to the bar and commenced the practice of law in Hartford, Connecticut. In 1883 and 1885, he was a member of the Connecticut State Legislature. In 1889, he was elected as a Republican to the 51st US Congress served until 1891 and was a United States Commissioner of Patents (1891-93). He died at age 60 in Hartford, Connecticut.