Marshall An English and a Scottish surname from the Old French mareschal “one who tends horses, especially one who treats their diseases; a shoeing smith, a farrier” Earlier surnames may refer to a high office of state (the Earl Marshal). In 1890 Marshall was principally found in Antrim, Derry, Down and Dublin, and the estimated number of bearers was 2,645. In the United States it is the 119th most numerous surname with an estimated 206,250 bearers. In England and Wales in 1996 it was the 65th most numerous surname. In Scotland in 1995 it was the 51st most numerous surname.