Built in 1844 by Thomas Timlin, Thornton is significant in Windsor because of its association with Edward Dimock, who purchased it in 1855. Dimock was a former Mayor and an owner of many major businesses including Dimock’s Hardware (1849), the Windsor Foundry (1855), the Commercial Bank of Windsor (1865), and the Wentworth Gypsum Company (1891). Thornton House is of special interest as it is of Georgian/Federal style, uncommon in Windsor. Many of its original features have been retained and it is probably the oldest brick home in town.