α. late Middle English Meighlyn, 1600s Mecklen, 1600s– Mechlin, 1700s Mechelin, 1700s Mechlen, 1700s Mechline, 1700s Mecklin.
β. 1600s Mackline, 1600s–1700s Macklin, 1700s Macklyn, 1700s Masklin; Scottish pre-1700 Mauchlyne, pre-1700 Mauchtlyne.
γ. Scottish pre-1700 Mauchlinys, pre-1700 Mauchlynis, pre-1700 Maulynis, pre-1700 Mawchlanis.
Also with lower-case initial.