Editing Richard of Cornwall (section)

===On Crusade and marriage to Sanchia, 1240–1243===
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| footer = '''Left''': Seal (''verso'' side) of Richard of Cornwall, showing his arms; '''right''' his arms: ''Argent, a [[Lions in heraldry|lion rampant]] gules crowned or a bordure sable [[bezant]]ée'' as drawn by his contemporary [[Matthew Paris]] (d. 1259)<ref>Matthew Paris, Book of Additions, British Library Cotton MS Nero D I, fol 171v [http://www.bl.uk/onlinegallery/onlineex/illmanus/cottmanucoll/h/011cotnerd00001u00171v00.html];</ref>
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Later that year, Richard departed for the Holy Land, leading the second host of crusaders to arrive during the [[Barons' Crusade]]. He did not fight any battles but managed to negotiate for the release of prisoners (most notably [[Amaury de Montfort (died 1241)|Amaury de Montfort]]) and the burials of [[crusaders]] killed at a battle in [[Gaza City|Gaza]] in November 1239. He also refortified [[Ashkelon|Ascalon]], which had been demolished by [[Saladin]]. On his return from the Holy Land, Richard visited his sister [[Isabella of England|Isabella]], the empress of [[Frederick II, Holy Roman Emperor|Frederick II]].

After the birth of [[Edward I of England|Prince Edward]] in 1239, provisions were made in case of the king's death, which favoured the Queen and her Savoyard relatives and excluded Richard. To keep him from becoming discontented King Henry and Queen Eleanor brought up the idea of a marriage with Eleanor's sister [[Sanchia of Provence|Sanchia]] shortly after his return on 28 January 1242.{{Citation needed|date=October 2014}} On his journey to the Holy Land, Richard had met Sanchia in Provence, where he was warmly welcomed by her father [[Ramon Berenguer IV, Count of Provence|Raymond Berenger IV]].{{sfn|Cox|1974|p=114}} Richard and Sanchia were married at Westminster in November 1243. Marriage to Sanchia had the advantage of tying Richard closely to the royal couple and their interests.

Eleanor and Sanchia's youngest sister [[Beatrice of Provence|Beatrice]] married [[Charles I of Naples]], while their oldest sister [[Margaret of Provence|Margaret]] had married [[Louis IX of France]]. The marriages of the kings of France and England and their two brothers to the four sisters from [[Provence]] improved the relationship between the two countries that led to the [[Treaty of Paris (1259)|Treaty of Paris]] in 1259.<ref>{{cite news | title= The Texts of the Peace of Paris, 1259 | journal = The English Historical Review | volume = 66 | number = 258 | pages = 81–97 [88] | last = Sanders | first= IJ | year=1951 | publisher=Oxford University Press}}</ref>