MacGregor
Argent, a fir-tree growing out of a mound in base vert, surmounted by a sword bendwise azure ensigned on the point with an imperial crown proper
Magdalen College
Fusilly ermine and sable a chief of the second, charged with three lilies slipped argent.
Magnall
Argent, a sweep (or sling) azure charged with a stone Or.
Major
Azure, three pillars of the Corinthian order [?] two and one; on the top of each a ball of the last.
Mallory
Argent, a gemi-lion rampant gules.
Malory
Or, a lion rampant, tail forked gules.
Man
Azure, a masculyn fleur-de-lysé Or, within and without five young men's heads couped argent crined Or.
Henry Man, 1546
Mandeville
Quartele d'or e de goulez.
Le Conte de Mandeville, roll temp Hen III
Markham
Azure, on a chief Or, a demi-lion rampant issuant gules.
Marlborough
Sable, a lion rampant argent, on a canton of the last a cross gules (ie a canton of St George).
Churchill, Duke of Marlborough, 1689
Martejoys
Gules, a wheel of eight spokes Or.
Matthews
Sable, a heron within a bordure argent.
Matthias
Gules, three dice argent, on each five (six?) spots in front, two upon the top, and three on the sinister side, sable.
Mauduit
D'argent a deus barres de goulz.
Roll temp. Hen III
Meares
Argent, a three-masted galley, her sails furled proper.
Mellish
Azure, two swans close in place argent between as many flaunches ermine.
Merchants of the Staple
Barry nebuly of six argent and azure; on a chief gules a lion passant gardant Or.
Company of Staple Merchants, inc. temp Ed III
Merling
Or, three billets gules.
Meryck
Sable, on a chevron argent between three staves raguly Or, inflamed proper, a fleur-de-lys azure between two Cornish coughs.
Meryck, 1575
Millington
Or, an eagle displayed with two necks sable.
Mitchell
Azure, a leopard's head afrronté erased Or.
Mohun
Gules, a maunch ermine, with a hand proper holding a fleur-de-lys Or.
* Montacute
Or, three bends wavy azure; on an inescutcheon (argent) three fusils (gules).
Simon Montacute, 1337
Montague
Port d'argent trois fuselles gules.
Monsire William de Montague, roll temp. Ed III
Montfort
Port bende de X peces d'or et d'azure.
Monsire de Montfort, roll temp Ed III
Moore
Argent, a moor-cock proper.
Moore, 1627
Mordaunt
Argent, a chevron between three estoiles sable.
Mordaunt, 1628
More
Argent, a heath-cock proper [ie sable], comb and gill gules.
Sir Francis More, 1619
Morley
Sable, a leopard's head [or face] argent, jessant a fleur-de-lys Or.
Mortimer
Barry of six and azure, on a chief of the first, three palets between two based esquires [some say gyrons or gyronnies] of the second; over all an inescutcheon argent.
Roger de Mortimer
Morton
Quarterly gules and ermine, in the first quarter a goat's head erased armed Or.
John Morton, 1486