Name
- Llywarch Hen1
- Llywelyn Cyllifor1
- Llywelyn ab Guttyn1
- Llywelyn ab Jorwerth, Prince of North Wales1
- Llywelyn ab Owain1
- Meredydd ab Rhys1
- Morgan, Family1
- Morgan, John, Reverend; of Add MS 148661
- Morris, Family1
- Morris, Lewis, alias Llywelyn Ddu1
- Morris, Richard, alias Rhisiart Fynglwyd, alias Llewelyn Ddulwyd1
- Morys ab Evan ab Einion, alias Morys Dwyfech1
- Nennius1
- Nicaise, Claude, Abbé; French antiquary1
- Owain Gwilym, Syr1
- Owain Gwynedd, alias Owain Efan1
- Owain Twna1
- Owen, Family1
- Owen, Gronwy, Reverend; alias Gronwy Ddu1
- Pabo, King1