Sources

1) Source: The Henry Project . External Link
https://fasg.org/projects/henryproject/data/geoff005.htm. Reference: Geoffrey V "le Bel" or "Plantagenet" (Questionable reliability of evidence)
2) Source: Chronica Magistri Rogeri de Houdene "after whose death [Stephen] Henry, the son of Geoffrey, earl of Anjou, and of Matilda, the former empress of the Romans, and daughter of the before-named king Henry the First, took the helm of the kingdom of England" (Data from direct source)
3) Source: The Ecclesiastical History of England and Normandy: Volume III "Henry, king of England, gave his daughter Matilda in marriage to the emperor… After her husband's death, the empress Matilda returned to her native country… The king of England, her father, afterwards married her to Geoffrey count of Anjou ; and she bore her husband a son, named Henry, in the year of our Lord 1133" (Data from secondary evidence)
4) Source: The Henry Project . External Link
https://fasg.org/projects/henryproject/data/matil002.htm. Reference: Matilda of England (The Empress Matilda) (Questionable reliability of evidence)
5) Source: Goldney Family Archives "Gift of the Empress Matilda and Henry, Duke of Normandy, her son"Dated: 1150. External Link
http://discovery.nationalarchives.gov.uk/details/r/8e8f17f4-24fc-4e9f-a20c-9c0d476003cd. Reference: 473/4 (Data from direct source)
6) Source: Chronica Magistri Rogeri de Houdene "king Henry, son of the empress Matilda" (Data from direct source)
7) Source: The Henry Project . External Link
https://fasg.org/projects/henryproject/data/henry002.htm. Reference: Henry II of England (Questionable reliability of evidence)
8) Source: Chronica Magistri Rogeri de Houdene "There also came to Limoges the earl of Maurienne, and desired to know how much of his own territory the king of England intended to grant to his son John" (Data from direct source)
9) Source: Chronica Magistri Rogeri de Houdene "Accordingly, on the fourth day they produced a writing, in which was the following statement: “king Sancho the Fat had three sons, Ferdinand, king of Castille, Ramiro, king of Arragon, and Garsias, king of Navarre and Nagara. Ferdinand was the father of king Alphonso, who took Toledo, and was the father of queen Vracha, who was the mother of the emperor Alphonso, the father of king Sancho, whose son was king Alphonso, who married Eleanor, daughter of Henry, king of England. Ramiro, king of Arragon, was the father of king Sancho, who was father of king Peter and king Alphonso. King Peter died without issue, and was succeeded by his brother, king Alphonso, who took Saragossa. Garsias, king of Navarre and Nagara, was the father of king Sancho, who was afterwards slain at Penaflel: he was the father of Sancho, who died without issue when a child, and was succeeded, in Navarre and Nagara, by king Alphonso, his father’s kinsman, who took Toledo, as far as the boundaries of Puente la Reyna and Sangosa: and the said child was succeeded by Sancho, king of Arragon, his father’s kinsman, in the remaining portion of Navarre and Pampeluna.”The Treaty and Covenants entered into between Alphonso, king of Castille, and Sancho, king of Navarre." (Data from direct source)
10) Source: Chronica Magistri Rogeri de Houdene "his son Richard succeeded him [Henry II]... After his decease his brother John succeeded" (Data from direct source)
11) Source: Chronica Magistri Rogeri de Houdene "In the same year [1196] died William, earl of Salisbury, son of earl Patrick, whose daughter and heiress Richard, king of England, gave to wife, together with the earldom of Salisbury, to William, his bastard brother." (Data from direct source)
12) Source: Chronica Magistri Rogeri de Houdene "[1200] it was agreed between them, that Louis, son of the king of France, should take to wife the daughter of Alphonso, king of Castille, and niece of John, king of England... After the conference, John, king of England, sent his mother, Eleanor, to Alphonso, king of Castille, to obtain his daughter in marriage for Louis, son of Philip, king of France." (Data from direct source)
13) Source: Chronica Magistri Rogeri de Houdene "Surprised at this beyond measure, he came to Chinon, and, touched with grief at heart, cursed the day on which he was born, and pronounced upon his sons the curse of God and of himself, which he would never withdraw, although bishops and other religious men frequently admonished him so to do. Being sick even unto death, he ordered himself to be carried into the church, before the altar, and there devoutly received the communion of the body and blood of Christ; and after confessing his sins, and being absolved by the bishop and clergy, he departed this life in the thirty-fifth year of his reign, on the octave of the Apostles Saint Peter and Saint Paul, being the fifth day of the week; after a reign of thirty-four years, seven months, and four days." (Data from direct source)
14) Source: Exchequer: Treasury of Receipt: Ancient Deeds, Series A "Confirmation by William de Warenne, earl of Surrey, son of Hamelin and Isabel, of grants to Lewes Priory made by his predecessors." Dated: 1202-1240.. External Link
https://discovery.nationalarchives.gov.uk/details/r/C4954160. Reference: E 40/15401 (Data from direct source)
15) Source: Special Collections: Ancient Correspondence of the Chancery and the Exchequer "William de Warenne, earl of Surrey to Hubert de Burgh, justiciar: the justiciar will be glad to hear that the countess of Eu, the earl's niece, and the justiciar's cousin, has arrived in England". Dated: c Aug 1219. External Link
https://discovery.nationalarchives.gov.uk/details/r/C9159957. Reference: SC 1/1/215 (Data from direct source)