Lacy
Argent, five swan's necks erased argent. (sic)

Lampden
Argent, on a bend engrailed sable, three ram's heads cabossed of the field attired Or.

Lancaster
Gules, a tricorporate lion issuing out of the three corners of the escutcheon, all meeting under one head in the fesse point Or, armed and langued azure.
Edmond Plantagenet, temp. Ed I

Lanercost Priory
Or, two flaunches gules.

Langford
Gules, a shoveller argent.

Langley
Argent, a fesse sable in chief three hurts.

Langton
Or, on a cross quarterly azure and gules five roses of the first.
Thomas Langton, 1483

Latimer
Gules, a cross patonce Or, surmounted of a bend azure semy of fleur-de-lys of the second.
Hugh Latimer, 1535

Lawrance
Argent, a cross raguly gules.

Leathes
Azure, on a bend between three fleur-de-lys Or, as many pierced mullets gules.

Leeson
Gules, a chief argent, on the lower part thereof a cloud [otherwise a chief nebuly] with rays proceeding therefrom proper.

Leicester Town
Gules, a cinquefoil pierced ermine.

* Legh
1. Argent a cross sable, in the dexter chief quarter a fleur-de-lis of the second.
2. Gules, a cross engrailed argent.
3. [?Azure] a chevron between three cross crosslets [?Or].
4. Argent, a mullet sable sabe, charged on one point (?) with a bezant.
5. Vert, a cross flory Or.
6. Lozengy argent and sable.
7. Azure, a chevron argent between three coverred cups Or.

Lenthall
Argent, on a bend cotised sable, three mullets Or.

Ley
Argent, a chevron between three seal's heads bendwise couped sable.
Ley, 1625

Lloyd
Gules, a chevrom ermine between three Englishmen's heads in profile proper.

Longespee
Azure, six lioncels rampant three, two, one Or.
William Longespee, 1226

Love
Vert, a heraldic tiger [possible a wolf, ie loup] passant Or mane and tuft of the tail argent.
Love, 1663

Lucy
De goules a trois lucie d'or.
Geffrey de Lucy, roll temp. Hen III

Lumley
Or, a chief gules.