Richard Donaldson Cooke b.ca 1748 was the son of Richard Cooke b. ca 1700 and lived in St. Mary's Co.MD. He was called Dr. Cooke. In 1745 Dr. Cooke leased 103 a. in Chaptico, St. Mary's Co. on lives of Dr. Richard Cooke, age 50, and Mary Magdalene Stoddert, age 20.