Some have suggested County Cork, Ireland, but the best clue is perhaps the peculiar name of "Hockley in the Hole" for their settlement.
He converted to Quakerism in 1658, and drowned off Kent Island in 1659.
40 of Dorsey's descendants fought in the Civil War for the Confederate States.
[1] His descendant in the ninth generation, Augustus Dorsey of Somerset County, Pennsylvania, was a sergeant in the 18th PA Cavalry, fought at Gettysburg, and survived nearly a year's captivity at Andersonville Prisoner of War camp.
[2] Another Gus W. Dorsey was there when JEB Stuart was shot at the Battle of Yellow Tavern.