1776, Hugh Clark, A Short and Easy Introduction to Heraldry, wherein its most useful terms are displayed, etc, page 45:
TRICORPORATED, a tricorporated lion issuing out of the three corners of the escutcheon, all meeting under one head in the fess point Or; this device was borne by Edmund Crouchback, earl of Lavcaster, brother to king Edward I.
1858, Jacob Frederick Y. Mogg, An essay on heraldry, page 17:
A lion tricorporated issuing out of the corners of the field, and meeting under one head in fess, or.
1864, Bernard Burke, The General Armory of England, Scotland, Ireland, and Wales: Comprising a Registry of Armorial Bearings from the Earliest to the Present Time, page 315:
Edmond. Gu. a tricorporated lion issuing out of three points of the escutcheon, all meeting under one head in fesse ar. armed and langued az.
