Merthyr Tydvil, [42]

Milford and Haven, [80], [82]

Moel Arthur, [269]

Moel Famma and Column, [268]

Mold, [267]

Mona, or Anglesea, [206]

Monkton, [75]

Monmouth, [29], [316]

Monnow River, [319]

Montgomery, [233], [295]