Origin: English, the surname Colman is derived from O'Colmain. First found in county Sligo where they were a sept of O'Colmain, a branch of Hy Fiachrach.

Spelling variations:  Colman, Coleman, O'Colman, MacColeman, McColeman, Coalman, Coulman, Colemen, Colmen, Coalmen, Colmin, Colmen, Coulmen, Coulmin, Colemin

The arms is as follows: Parted per fess, chief argent with two sable mullets and top of cross sable, base sable with two argent mullets and bottom of cross argent 

Motto:  Unknown

Device: 

Cross

Mullet - Spur rowel

Colors: 

Sable (Black) - Constancy, grief

Argent (Silver or White) - Sincerity, Peace

Notes: Sources: Coats of Arms from Ireland and around the World
My Histories.com Irish COA
My Histories.com Scottish Clan Badge (Sept of Clan Buchanan)
House of Names (Swyrich)

Image - Copyright © 2004 - 2006, Ken Mraz