The Liber Modernorum Regum Francorum names (in order) "Philippum, Hugonem atque Rotbertum" as the three sons of King Henri and Anna. Orderic Vitalis names "Philippum et Hugonem Magnum Crispeii comitem" as the children of "Henricus…Francorum rex" and his wife "Bertradam, Julii Claudii regis Russiæ filiam". The Chronicle of Alberic de Trois-Fontaines records the birth in 1052 of "rex futurus regis Francorum Henrici filius ex Anna filia Georgii regis Sclavonum".
Betrothed ([1055/59]) to Judith [Maria/Sophia] of Germany, daughter of Emperor Heinrich III King of Germany & his second wife Agnès de Poitou. The Gesta Hungarorum records that King András forced the marriage of "Salomoni regi" and "Henricus imperator…Sophiam suam filiam", specifying that she had earlier been betrothed to "filio regis Franciæ". This could only refer to the future Philippe I King of France as it is unlikely that the emperor's daughter would have been betrothed to his younger brother. This betrothal is not corroborated in the western European primary sources so far consulted.
He was consecrated associate-king 23 May 1059, at the cathedral of Notre-Dame de Reims: the Hugonis Floriacensis Actum records the consecration in 1058 of “rex...Henricus...Philippum filium suum duodennum” at “Remis a Gervasio archiepiscopo”, in the presence of “duo Nicholai papæ legati, Hugo...Bisunciensis archiepiscopus et Hermenfredus Sedunensis episcopus”. His father entrusted his education to his uncle Baldwin V Count of Flanders, who later became regent until 1066/67.
He succeeded his father in 1060 as PHILIPPE I King of France. The Bertholdi Annales record in 1060 the death of “Heinricus Galliarum rex” and the succession of “filius eius Philippus adhuc puer regnum cum matre gubernandum suscepit”. Consecrated 25 Dec 1071 at Laon, again 16 May 1098 at Tours, and for a fourth time 25 Dec 1100 at Reims. Foulques IV "le Rechin" Comte d'Anjou ceded Château-Landon and Gâtinais to him in 1069, in return for the king's recognition of his accession as count. King Philippe pursued this policy of expanding his territories, adding Corbie in 1074, acquiring part of Vermandois on the death of Raoul Comte de Vermandois in 1074, invading Vexin in 1077, and taking possession of Bourges in 1100. In 1071, after ineffectively helping Arnoul III Count of Flanders against his uncle Robert, the latter made peace with King Philippe and arranged the king's marriage to his stepdaughter.
The Historia Regum Francorum Monasterii Sancti Dionysii records the death "apud Milidunum IV Kal Aug" of King Philippe and his burial "in ecclesia sancti Benedicti super Ligerim in pago Aurelianensi". The necrology of the abbey of Saint-Germain-des-Prés records the death "III Kal Aug" of "Philippus rex Francorum". The necrology of the abbey of Saint-Denis records the death "III Kal Aug" of "Philippus rex". 1
Philip I... king of France (1059–1108) who came to the throne at a time when the Capetian monarchy was extremely weak but who succeeded in enlarging the royal estates and treasury by a policy of devious alliances, the sale of his neutrality in the quarrels of powerful vassals, and the practice of simony on a huge scale.
Philip was the elder son of Henry I of France by his second wife, Anne of Kiev. Crowned at Reims in May 1059, he became sole king on his father’s death in 1060; Baldwin V, count of Flanders, exercised the regency. Two years after he came of age in 1066, he obtained the county of Gâtinais as the price of his neutrality in a family struggle over Anjou and thereby linked the royal possessions in Sens with those around Paris, Melun, and Orléans. His major efforts, however, were directed toward Normandy, in which from 1076 he supported Robert II Curthose, its ineffectual duke, first against Robert’s father, King William I of England, then against Robert’s brother, William II. Philip’s true goal was to prevent emergence of a rival power in Normandy, for he was willing to abandon Robert whenever it seemed possible he might become dangerous.
Because of his firm determination to retain control over all appointments to ecclesiastical posts, which he blatantly sold, Philip was eventually drawn into conflict with the papacy, which nonetheless did not assume the disastrous proportions of the similar struggle over investitures in the Holy Roman Empire. This conflict was exacerbated by his matrimonial affairs; his scandalous “marriage” with Bertrada de Montfort, wife of a vassal, brought him repeated excommunication. By 1107, when the French monarchy’s struggle with the papacy was finally ended, Louis VI, Philip’s son by his legitimate wife, Bertha, had taken over the administration of the kingdom, Philip having been rendered inactive by his extreme obesity.