a clerk and companion of Becket, a Frenchman exclaimed "If the Chancellor of England travels in such splendor, what must the king be?" Louis VII's daughter, Margaret, who was still a baby, was betrothed to Henry's heir, his eldest son, Henry the Young King with a dowry of the Norman Vexin. Henry II was given back the castles of Moulins-la-Marche and Bonmoulins. Theobald V, Count of Blois handed Amboise and Fréteval back to him. Flanders The counts of Flanders had long been powerful but capricious allies of the kings of France. Count Thierry had taken part in Louis VII's early assaults against Henry II, and Henry had expelled all Flemish mercenaries in England at the time of his accession, but much of Flanders' prosperity relied on English trade and England traded much of its wool via the Flemish port of Boulogne. Henry, therefore, was able to re-establish friendly relations to the extent that Thierry appointed Henry guardian of his eldest son and regent, Philip, when Thierry undertook his pilgrimage to Jerusalem in 1157. When William of Blois died without an heir in 1159, the titles of Count of Boulogne and Count of Mortain fell vacant. Henry II absorbed Mortain into his Duchy of Normandy, but granted Boulogne and William's sister, Mary, to Thierry's second son, Matthew. Through this marriage, and the 1163 renewal of a previous treaty between Henry I of England, and Robert II of Flanders, Henry II was assured of Flemish neutrality if war broke out with the king of France again. Flanders would provide Henry II with knights in exchange of an annual tribute in money, known as a "money-fief". Brittany In 1148, Conan III, Duke of Brittany, died, leaving behind two children. Although his son Hoël was the natural choice to succeed to the ducal throne, evidence suggests that Hoël was illegitimate and instead he was only recognised as Count of Nantes. Hoël's sister Bertha became Duchess of Brittany, ruling alongside her husband, Eudo of Porhoët. However Bertha had a son, Conan, from her previous marriage to the late Alan de Bretagne. Conan had been too young to succeed his grandfather in 1148, but he became Henry II's perfect candidate to become Duke of Brittany on Bertha's death, as his English holdings as Earl of Richmond meant he would be easier to control. In Nantes, possibly due to Hoël's recognition of his sister and brother-in-law's suzerainty