Corotoman was a 17th and 18th century plantation on the Rappahannock River in Lancaster County, Virginia, United States. Corotoman was the residence of Robert Carter I, a colonial Governor of Virginia and one of the wealthiest men in the British colonies in North America. Corotoman was located on a point overlooking the Rappahannock River, and flanked …Corotoman was a 17th and 18th century plantation on the Rappahannock River in Lancaster County, Virginia, United States. Corotoman was the residence of Robert Carter I, a colonial Governor of Virginia and one of the wealthiest men in the British colonies in North America. Corotoman was located on a point overlooking the Rappahannock River, and flanked by Carter's Creek and Corrotoman River to its east and west respectively.