Dictionary of Medieval Names
from European Sources

Macbeth m. Old Irish mac 'son' + Old Irish bethad 'of life'.

The name of an 11th C king of the Scots.

Scotland
Latin
1040x1057 Machbet (nom) ESC V, Makbeth (nom) ibid. V; 1093x1107 Macbeath (gen) ibid. XIV
Cite as: S.L. Uckelman. "Macbeth". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2016, no. 4. http://dmnes.org/2016/4/name/Macbeth.