was not a form of escheat, which was an extinguishment of a tenure. Primer seisin can thus be seen as a variety of feudal burden, or feudal incident, that is to say a right exercisable by an overlord over his vassal's holding. The Wardships, etc. Act 1267 passed by King Henry III (1267 (52 Hen. 3) C A P. XVI) stated as follows: (2) And if an Heir at the time of his Ancestor's Death be of full Age, and he is Heir apparent, and known for Heir, and be found in the Inheritance, the chief Lord shall not put him out, nor take, nor remove any thing there, but shall take only simple Seisin therefore for the Recognition of his Seigniory, that he may be known for Lord. (3) And if the chief Lord do put such an Heir out of the Possession maliciously, whereby he is driven to purchase a Writ of Mort d'Auncestor, or of Cousenage, then he shall recover his Damages as in Assise of Novel Disseisin. II. Touching Heirs, which hold of our Lord the King in chief, this Order shall be observed, That our Lord the King shall have the first Seisin of their Lands, like as he was wont to have before time: Neither shall the Heir, nor any other, intrude into the same Inheritance, before he hath received it out of the King's Hands, as the same Inheritance was wont to be taken out of his Hands and his Ancestors in times past. And this must be understood of Lands and Fees, the which were accustomed to be in the King's Hands, by reason of Knight service, or Serjeanty, or Right of Patronage. In European feudalism In European feudal states, "ownership" of land, that is to say allodial possession, was generally restricted to monarchs and was thus rarely an operative principle. Instead seisin was used as a term signifying feudal possession. The modern writer Marc Bloch considers seisin to signify "possession made venerable by the lapse of time" and that "paper documentary evidence was not required to establish seisin, rather human memory of the use of land or administration of justice there was invoked, especially these by the ancestors". Scotland The equivalent Scottish term is sasine, which term has developed a further signification in Scots law. Ireland Following the Norman invasion of Ireland, feudalism was introduced in those areas under Norman control.