Claim: The United States Board on Geographic Names named the stream in 1933  after Charles Moorman, who in 1735 patented 400 acres (1.6 km) of land in what was then Goochland County, at the junction of the Mechum and (now) Moorman rivers, a 14.3-mile-long (23.0 km) tributary of the South Fork of the Rivanna River in central Virginia in the United States.
Evidence: The United States Board on Geographic Names settled on "Moormans River" as the stream's official name in 1933. The river was named for Charles Moorman, who in 1735 patented 400 acres (1.6 km) of land in what was then Goochland County, at the junction of the Mechum and (now) Moorman rivers. The Moormans River is a 14.3-mile-long (23.0 km) tributary of the South Fork of the Rivanna River in central Virginia in the United States.