he was having sex with Eleanor and was not in his chambers when the assassin broke in. Despite initial concerns that the Queen might be barren, Henry and Eleanor had five children together. In 1239 Eleanor gave birth to their first child, Edward, named after the Confessor. Henry was overjoyed and held huge celebrations, giving lavishly to the Church and to the poor to encourage God to protect his young son. Their first daughter, Margaret, named after Eleanor's sister, followed in 1240, her birth also accompanied by celebrations and donations to the poor. The third child, Beatrice, was named after Eleanor's mother, and born in 1242 during a campaign in Poitou. Their fourth child, Edmund, arrived in 1245 and was named after the 9th-century saint. Concerned about Eleanor's health, Henry donated large amounts of money to the Church throughout the pregnancy. A third daughter, Katherine, was born in 1253 but soon fell ill, possibly the result of a degenerative disorder such as Rett syndrome, and was unable to speak. She died in 1257 and Henry was distraught. His children spent most of their childhood at Windsor Castle and he appears to have been extremely attached to them, rarely spending extended periods of time apart from his family. After Eleanor's marriage, many of her Savoyard relatives joined her in England. At least 170 Savoyards arrived in England after 1236, coming from Savoy, Burgundy and Flanders, including Eleanor's uncles, the later Archbishop Boniface of Canterbury and William of Savoy, Henry's chief adviser for a short period. Henry arranged marriages for many of them into the English nobility, a practice that initially caused friction with the English barons, who resisted landed estates passing into the hands of foreigners. The Savoyards were careful not to exacerbate the situation and became increasingly integrated into English baronial society, forming an important power base for Eleanor in England. Poitou and the Lusignans In 1241, the barons in Poitou, including Henry's step-father Hugh de Lusignan, rebelled against the rule of Louis of France. The rebels had counted on aid from Henry, but he lacked domestic support and was slow to mobilise an army, not arriving in France until the next summer. His campaign was hesitant and was further undermined by Hugh switching sides and returning to support Louis. On 20 May Henry's army was surrounded by the French at Taillebourg. Henry's brother Richard persuaded the French to delay