Most writers agree in assigning the origin of heraldry, in the modern acceptation of the term, to the crusades. At least little is recorded concerning the "science," or "art," as it is sometimes termed, previously to the middle of the twelfth century. It was found necessary during the religious wars in the east that the knights should wear some device or distinguishing badge on the field of battle, on account of the diversity of the languages spoken by the combatants, and hence the term "cognizance" was often applied to these symbols. This, in the following century, eventuated in the adoption of the warlike badges or "arms" of the original bearers by their families. They afterwards became hereditary characteristics, and hence the development of the _quasi_ science. These devices were figured on crest, banner, and shield. One authority (Pen. Cyclop.) says--"The crest is said to have been carved on light wood, or made of leather, _in the shape of some animal, real or fictitious_, and fastened by a fillet of silk round the helmet, over which was a large piece of fringed samit or taffeta, pointed with a tassel at the end." The same writer adds--"The custom of conferring crests as distinguishing marks seems to have originated with Edward III., who, in 1333 (Rot. Pat., 9 Edward III.), granted one to William Montacute, Earl of Salisbury, his 'tymbre,' as it is called, of the eagle. By a further grant, in the thirteenth of the same king (Rot. Vasc., 13 Edward III., m. 4), the grant of this crest was made hereditary, and the manor of Wodeton given in addition to support its dignity."