The most soul-crushing part of doing family research via South Carolina's awesome digitized archive (these are all the variations I've thus far been able to get hits on)
MCULLOCH
MCULLOCK
MCULLOGTOR
MCULLOUGH
MCULLY
MCULLEY
MCOLLOUGH
MCOLLU
MCKOLLOCK
MCKOLOUGH
MACCOLLOCK
MACCOLLUGH
MACCULLOH
MCALLA
MCCALLOCH
MCCALLOUGH
MCCULLA
MCCULLAH
MCCULLAK
MCCULLAN
MCCULLAR
MCCULLARS
MCCULOCK
MCCULOUGH
MCCULOW
MCCULLUCH
MCCULLUCK
MCCULLUCKS
MCCULLUGH
MCCULLUM
MCCOLLACK
MCCOLLAM
MCCOLLOCH
MCCOLLOCK
MCCOLLOUGH