The Statute of Westminster of 1285, also known as the Statute of Westminster II or the Statute of Westminster the Second,[1] like the Statute of Westminster 1275, is a code in itself, and contains the famous clause De donis conditionalibus,[2] one of the fundamental institutes of the medieval land law of England.

[2] William Stubbs says of it:[3] The law of dower, of advowson, of appeal for felonies, is largely amended; the institution of justices of assize is remodelled, and the abuses of manorial jurisdiction repressed; the statute De religiosis, the statutes of Merton and Gloucester, are amended and re-enacted.

[4] The Statute of Westminster II is composed of 50 chapters.

The de donis conditionalibus clause is chapter 1, and is still in force.

Chapter 46 became known as the Commons Act 1285 and was repealed in England in 2006, and in Wales in 2007.