Name
- Llywarch Bentwrch1
- Llywarch Offeiriad1
- Llywelyn Cyllifor1
- Llywelyn Ddu ab y Pastard1
- Llywelyn Moel y Pantri1
- Madog ab Owain Gwynedd1
- Manuel, Dafydd, poet, 1624?-17261
- Mason, Morgan1
- Matthew Llywelyn Goch1
- Merddin ab Taliessin1
- Meredith, Family1
- Meredydd ab Niclas1
- Middleton, Pierce1
- Middleton, Robert, of Add MS 148901
- Morgan Talai1
- Morgan ab Hywel ab Tudyr1
- Morgan, James, of Add MS 149351
- Morgan, Jane, mother of Rowland Morgan1
- Morgan, Rowland1
- Morris, Family1