Question: Who was the son of Geoffrey of Anjou and Matilda, daughter of Henry I of England, and had Anglo-Norman administrator and nobleman ewarded with a marriage to an heiress for his service?

Context paragraphs:
Josce de Dinan: Josce de Dinan (died 1166) was an Anglo-Norman nobleman who lived during and after the civil war between King Stephen of England and his cousin Matilda over the throne of England.  He was a landholder in the Welsh Marches when he was married by Stephen to the widow of Pain fitzJohn, a union that gave Josce control of Ludlow Castle.  Control of the castle was contested by other noblemen, and the resulting warfare between the nobles forms the background to a late medieval romance known as "Fouke le Fitz Waryn", which is mainly concerned with the actions of Josce's grandson, but also includes some material on Josce's lifetime.  Josce eventually lost control of Ludlow and was granted lands in compensation by Matilda and her son, King Henry II of England, who succeeded Stephen in 1154.

Henry de Longchamp: Henry de Longchamp or Henry de Longo Campo (c1150–1212) was an Anglo-Norman administrator.

Treaty of Tours: The Treaty of Tours was an agreement between Henry VI of England and the Charles VII of France, signed on 22 May 1444.  The terms stipulated the marriage of Charles VII's fifteen-year-old niece, Margaret of Anjou, to Henry VI and the agreement of a 21-month truce between the Kingdoms of England and France.  In exchange for the marriage, Charles wanted the area of Maine in northern France.  Henry VI married Margaret a year later, in April 1445, when Henry VI was 23 years old.  He did not, however, give up Maine.  Charles threatened Henry VI and sent envoys to pressure him; even Margaret tried to persuade Henry to give it up.  Henry eventually yielded in 1448 when Charles VII threatened English garrisons with a large army.  The Treaty was seen as a major failure for England as the bride secured for Henry VI was a poor match, being related to King Charles VII only distantly, and through marriage rather than by blood.  Her marriage came also without a dowry, when the amount that should have been given was 20,000 livres.  Margaret of Anjou was the daughter of the impoverished René of Anjou and in addition to being presented with Margaret without a dowry, Henry was also expected to pay for the wedding.  The Treaty of Tours exacerbated rifts between the court's Beaufort faction and the Dukes of Gloucester and York, and has been considered a potentially contributory factor to the outbreak of the Wars of the Roses.

England in the High Middle Ages: England in the High Middle Ages includes the history of England between the Norman Conquest in 1066 and the death of King John, considered by some to be the last of the Angevin kings of England, in 1216.  A disputed succession and victory at the Battle of Hastings led to the conquest of England by William of Normandy in 1066.  This linked the crown of England with possessions in France and brought a new aristocracy to the country that dominated landholding, government and the church.  They brought with them the French language and maintained their rule through a system of castles and the introduction of a feudal system of landholding.  By the time of William's death in 1087, England formed the largest part of an Anglo-Norman empire, ruled by nobles with landholdings across England, Normandy and Wales.  William's sons disputed succession to his lands, with William II emerging as ruler of England and much of Normandy.  On his death in 1100 his younger brother claimed the throne as Henry I and defeated his brother Robert to reunite England and Normandy.  Henry was a ruthless yet effective king, but after the death of his only male heir in the White Ship tragedy, he persuaded his barons to recognise his daughter Matilda as heir.  When Henry died in 1135 her cousin Stephen of Blois had himself proclaimed king, leading to a civil war known as The Anarchy.  Eventually Stephen recognised Matilda's son Henry as his heir and when Stephen died in 1154, he succeeded as Henry II.

Eleanor, Fair Maid of Brittany: Eleanor Fair Maid of Brittany (c. 1184 – 10 August 1241), also known as Damsel of Brittany, Pearl of Brittany, or Beauty of Brittany, was the eldest daughter of Geoffrey II, Duke of Brittany, the fourth son of King Henry II of England, and Constance, Duchess of Brittany.  After the presumed death in 1203 of her imprisoned younger brother, Arthur, she was heiress to vast lands including England, Anjou, and Aquitaine as well as Brittany, realms where the Salic Law barring the accession of females did not apply.  Her uncle John, King of England was the fifth son of Henry II, and Eleanor inherited Arthur's claim to the throne as child of John's elder brother Geoffrey.  Thus she posed a potential threat to John, and following his death in 1216, equally to her cousin, Henry III of England.  She was imprisoned from 1202, and thus became the longest-imprisoned member of an English royal family.  As a prisoner she was also unable to press her claim to the Duchy of Brittany as her mother's heiress.

Reginald de Warenne: Reginald de Warenne (sometimes Rainald de Warenne; between 1121 and 1126 – 1179) was an Anglo-Norman nobleman and royal official.  The third son of an earl, Reginald began his career as an administrator of his brother's estates and married the heiress to the feudal barony of Wormegay in Norfolk.  By the reign of King Henry II, Reginald was a royal justice and played a minor role in the Becket controversy in 1170.  He died in 1179 and left a son and heir together with several daughters.

Geoffrey Plantagenet, Count of Anjou: Geoffrey V (24 August 1113 – 7 September 1151) — called the Handsome or the Fair (French: "le Bel" ) and Plantagenet — was the Count of Anjou, Touraine, and Maine by inheritance from 1129 and then Duke of Normandy by conquest from 1144.  By his marriage to the Empress Matilda, daughter and heiress of Henry I of England, Geoffrey had a son, Henry Curtmantle, who succeeded to the English throne as King Henry II (1154-1189) and was the first of the Plantagenet dynasty to rule England; the name "Plantagenet" was taken from Geoffrey's epithet.  His ancestral domain of Anjou gave rise to the name Angevin for three kings of England (Henry II his son and heir, and Henry's sons Richard and John), and what became known as the Angevin Empire in the 12th century.

Angevin kings of England: The Angevins ("from Anjou") were an English royal house in the 12th and early 13th centuries; its monarchs were Henry II, Richard I and John.  In the 10 years from 1144, two successive counts of Anjou, Geoffrey and his son, the future Henry II, won control of a vast assemblage of lands in western Europe that would last for 80 years and would retrospectively be referred to as the Angevin Empire.  As a political entity this was structurally different from the preceding Norman and subsequent Plantagenet realms.  Geoffrey became Duke of Normandy in 1144 and died in 1151.  In 1152 his heir, Henry, added Aquitaine by virtue of his marriage to Eleanor of Aquitaine.  Henry also inherited the claim of his mother, Empress Matilda, the daughter of King Henry I, to the English throne, to which he succeeded in 1154 following the death of King Stephen.

Hugh de Cressy: Hugh de Cressy (died 1189) was an Anglo-Norman administrator and nobleman.  Little is known of his ancestry and he first served two brothers of King Henry II of England before becoming a royal official.  He was rewarded with a marriage to an heiress for his service to the king.  In England he often served as a royal justice and witnessed documents, which showed his closeness to the king.  On the continent, he recruited mercenaries for the royal army and was named constable of the castle of Rouen in the royal lands in France.  He died in 1189 after giving lands to various monasteries before his death.

Henry II of England: Henry II (5 March 1133 – 6 July 1189), also known as Henry Curtmantle (French: "Court-manteau" ), Henry FitzEmpress or Henry Plantagenet, ruled as Count of Anjou, Count of Maine, Duke of Normandy, Duke of Aquitaine, Count of Nantes, King of England and Lord of Ireland; at various times, he also controlled Wales, Scotland and Brittany.  Henry was the son of Geoffrey of Anjou and Matilda, daughter of Henry I of England.  He became actively involved by the age of 14 in his mother's efforts to claim the throne of England, then occupied by Stephen of Blois, and was made Duke of Normandy at 17.  He inherited Anjou in 1151 and shortly afterwards married Eleanor of Aquitaine, whose marriage to Louis VII of France had recently been annulled.  Stephen agreed to a peace treaty after Henry's military expedition to England in 1153, and Henry inherited the kingdom on Stephen's death a year later.

Supporting paragraphs: Hugh de Cressy Henry II of England
Answer: Henry II