Editing Richard of Cornwall (section)

===Later life, death and successors===
[[File:Sanchie.jpg|thumb|Seal of Sanchia, Queen of the Romans, Richard's wife]]
He founded [[Burnham Abbey]] in Buckinghamshire in 1263, and the {{ill|Grashaus|de}}, [[Aachen]] in 1266.

He joined King Henry in fighting against Simon de Montfort's rebels in the [[Second Barons' War]] (1264–1267). After the shattering royalist defeat at the [[Battle of Lewes]], Richard took refuge in a [[windmill]], was discovered, and was imprisoned until September 1265.

Richard bought the [[feudal barony of Trematon]] in 1270.

In March 1271 Richard's son and heir [[Henry of Almain]] was murdered in Viterbo at the Church of San Silvestro by [[Guy de Montfort, Count of Nola|Guy]] and [[Simon de Montfort the Younger]] in revenge for their father and brother [[Henry de Montfort]] being killed at the Battle of Evesham. Simon and Guy were Richard's nephews and sources say that Richard did not recover from the shock. In December 1271, he had a stroke. His right side was paralysed and he lost the ability to speak. On 2 April 1272, Richard died at [[Berkhamsted Castle]] in Hertfordshire. He was buried next to his second wife [[Sanchia of Provence]] and [[Henry of Almain]], his son by his first wife, at [[Hailes Abbey]], which he had founded.

After his death, a power struggle ensued in Germany, which only ended in 1273 with the emergence of [[Rudolf I of Germany|Rudolph I of Habsburg]], the first scion of a long-lasting noble family to rule the empire. In Cornwall, Richard was succeeded by [[Edmund, 2nd Earl of Cornwall|Edmund]], son of his second wife Sanchia.