Scottish Gaelic crom

← Old English crumb (derived)

← Proto-Germanic *krumbaz (derived)

← Middle Irish cromm (inherited)

← Old Irish cromb (inherited)

← Old Irish cromm (mention)

← Old Irish crommaid (inherited)

→ English cascrom (mention)

→ English Crombie (mention)

→ English McCrum (mention)

→ Scottish Gaelic cas-chrom (affix)