Scottish and northern Irish: from the medieval personal name Lagman, which is from Old Norse Logmaðr, composed of log, plural of lag ‘law’ (from leggja ‘to lay down’) + maðr, ‘man’ (genitive manns). French: habitational name from places called Amont, in Haute-Saône and Haute-Vienne.
indicate the level to which a name has been verified.