King John was a strong king with a fierce temper, but proved to be a very unpopular monarch, easily offending his Barons. The Barons rebelled and the Magna Carta was signed by the king, giving them the right to fight abuse from the King and also giving concessions to other classes. It meant that the King had to talk to a Council of Barons and Bishops before he made any big decisions.
John died from dysentery on 18th October at Newark Castle, Nottinghamshire, after 17 years on the throne and was buried at Worcester Cathedral, Worcester. He was certainly unpopular with his subjects and he left the kingdom to his nine year old son Henry III ascended to the throne on 28th October at Gloucester Cathedral, Gloucestershire.
Henry III was crowned secondly on 17th May at Westminster Abbey, Middlesex.
Henry III assumed full Sovereignty of his Kingdom at the age of 20.
It is not known where Walter Bayntun (or de Beinton) was born but in 1242-43 he held 1/5 knight's fee in the Tockenham estate of Malmesbury Abbey, of Humphrey de Bohun V (d 1275), the Second Earl of Hereford, Constable of England and First Earl of Essex also known as The Good Earl of Hereford. Humphrey was a great soldier and played a major role in the uprising of the Barons against the absolutism of Henry III.
Walter Bayntun also held 1/10 knight's fee of land at Tilshead of the honour of Trowbridge which may have included 62 acres.