From the Clam Muir web site

This the list of variations of members of the Clan MUIR

The Name "Muir"


Variations of the Clan Name

and the territory from which they originated

MUIR/MORE/MOORE/MURE - MOST COMMON IN AYRSHIRE AND AREAS SOUTHWEST

MOAR - MOST COMMON IN THE ORKNEY AND SHETLAND

MOIR - MOST COMMON IN ABERDEENSHIRE AND SOUTHWEST

MOHR - MOST COMMON IN CENTRAL LOWLANDS

MOR - MOST COMMON IN CENTRAL LOWLANDS

O'MORE - MOST COMMON IN IRELAND

O'MORHDA- MOST COMMON IN IRELAND

O'MOORE- MOST COMMON IN IRELAND