- Mackay
- Mackey
- MacKibbon
- Mackley
- Mackmallin
- Maclachlau
- Maclay
- MacLean
- MacLennan
- MacLeod
- MacMaster
- MacMillan
- MacNab
- MacPherson
- MacQueen
- MacReynolds
- Macumber
- Macy
- Madden
- Maddox
- Madison
- Madlicott
- Madog Fychan ap Madog Crupl
- Maelog
- Magary
- Magie
- Magiles
- Magnus
- Magoon
- Mahaffey
- Mahan
- Maher
- Mahieu
- Mahoney
- Maidret
- Maier
- Main
- Mainardi
- Mainwaring
- Agnes, of Over Peover (Est 1463-1560)
- Arthur (Abt 1520-)
- Benedict (Est 1236-)
- Bertrade (Abt 1194-Aft 1249)
- Cecily (Est 1399-)
- Cicely (Est 1470-Bef 1516)
- Edward (Est 1499-1586)
- Elizabeth (Est 1400-)
- Elizabeth (Est 1525-)
- Elizabeth or Alice (Est 1416-)
- Guy (Est 1237-)
- John, of Peover (Sir) (Est 1394-1480)
- John, of Peover (Est 1412-)
- John, of Over Peover (Est 1444-1495)
- John, (Sir) (Abt 1470-1516)
- Katherine (Est 1491-)
- Margaret (Est 1403-1459)
- Margaret (Est 1418-)
- Margaret (Est 1465-)
- Margaret (Est 1493-)
- Margaret (Abt 1521-Bef 1590)
- Marjery (Est 1437-1509)
- Mary (1541-1578)
- Philip (Est 1497-1573)
- Ralph, (Sir) (1155-)
- Randall, (Sir) (Abt 1495-1557)
- Randle, of Over Peover (Abt 1359-1456)
- Randle (Est 1396-)
- Robert (Est 1501-)
- Roger, (Sir) (Abt 1192-)
- Roger (Abt 1235-)
- Roger (Est 1275-)
- Thomas, (Sir) (Abt 1225-Aft 1277)
- Thomas (Est 1435-)
- William, (Sir) (Abt 1214-1248)
- William (Abt 1235-)
- William (Est 1300-Abt 1341)
- William (Est 1326-1364)
- William (Est 1395-)
- William, of Over Peover (Est 1414-Bef 1490)
- Maisenbacher
- Maish
- Major
- Makernes
- Makin
- Maland
- Malaxa
- Maldt
- Male
- Malecki
- Malephant
- Maleski
- Malesmains
- Mallett
- Mallory
- Malm
- Malone
- Maltby
- Malzahn
- Manchester
- Mandeville
- Manger
- Manley