Morrison Both an English and a Scottish surname meaning son of Maurice (from Latin Mauricius, moorish). Also see Morris. In 1890 Morrison was principally found in Antrim, Down and Dublin, and the estimated number of bearers was 4,970 (including variants). In the United States it is the 221st most numerous surname with an estimated 132,000 bearers. In England and Wales in 1996 it was the 297th most numerous surname. In Scotland in 1995 it was the 21st most numerous surname.