The original two rooms of this house, located in the back, are believed to have been built before 1852 by Jefferson's founder Allen Urquhart (1792-1866). Three rooms, constructed in the front, were joined to the earlier structure by William Clark (1848-1928), a local merchant who bought the house in 1885. A Presbyterian, Clark served as postmaster and county judge and in 1901 became the Grand Master of the Masonic Lodge in Texas. He lived here for 43 years. Recorded Texas Historic Landmark - 1981