A Cardinal House is a bed and breakfast located on Main Street in Glastonbury. Their website describes it as an 1850 house in the Georgian Revival style. That would make it a very early example of this style of building.
Edit (5/27/08): I have more recently learned that this house was extensively remodeled in 1897 and again in 1936, when it was the home of Dr. Lee J. Whittles. He studied Glastonbury’s old houses for decades and was part of the committee responsible for the Welles-Shipman-Ward House from being razed.