Magnus Saga (in Rolls Edition of Dasent's Translation of Orkneyinga Saga).
Maxwell, Sir Herbert, Early Chronicles relating to Scotland. Glasgow, Maclehose, 1912.
Moray—Registrum Episcopatus Moraviensis (Bannatyne Club) (Reg. Morav.)
Moray—Shaw's History of.
Munch's Symbolae or Notes to the Diploma of the Orkney Earls.
Munro, Dr. Robert. Prehistoric Scotland.
Nisbet's Heraldry.
Orcades, by Thormodus Torfaeus. Copenhagen, 1715.
Orcades, (Torfaeus) Translation by the Rev. A. Pope. Wick, Peter Reid, 1866.