Henry of Blois unsuccessful. However, on 1 March 1139, during the reign of his brother Stephen, Henry obtained a commission as papal legate, which gave him higher rank than Theobald of Bec, Archbishop of Canterbury, making him the most powerful figure in the English Church during the troubled times of the so-called "Anarchy". Thus, when his brother was unavailable, Henry of Blois was the most powerful, and possibly the wealthiest, man in England. Stephen of Blois was crowned King of England in 1135, but the relations between the two brothers were not always peaceful. After the Battle of Lincoln in 1141, Henry found
Joan, Countess of Blois Peter of Alençon, a son of King Louis IX of France and Margaret of Provence. They had two sons who both died in infancy: Joan died in 1291, with no living issue. She left the title of Count of Blois and her remaining titles to her cousin Hugh. Joan, Countess of Blois Joan of Châtillon ("Jeanne de Blois"; 1253? – 19 or 29 January 1291) was Countess of Blois from 1280 to 1291, and Lady of Avesnes. She was the daughter of John I, Count of Blois and Alix of Brittany, Dame de Pontarcy. Joan received the County of Chartres