Sources

1) Source: The Ecclesiastical History of England and Normandy: Volume III "The following Sunday Lewis Theobald, his son, was crowned at Orleans, and swayed the sceptre of France in prosperity and adversity twenty-eight years. He married Adelaide, daughter of Humbert, prince of Dauphiny, who bore him four sons, Philip, Lewis Florus, Henry, and Hugh." (Data from secondary evidence)
2) Source: Les origines du Dauphiné de Viennois: la première race des comtes d’Albon (843-1228) "Mahaud, fille de Guigues VIII, épouse Amédée III comte de Savoie et marquis en Italie dont le pere Humbert meurt a Moutiers le 18 septembre 1103 et qui mourra, lui-meme a Nicosie le 3 avril 1108 : la soeur d'Amadée III, Alix, épouse elle-meme, le 3 aout 1115, le roi de France Louis VI... la mort de la reine Alix le 3 Octobre [1154].". Reference: Page 94
3) Source: Chronica Magistri Rogeri de Houdene "should assemble at Rheims, at the beginning of the calends of November, in order to celebrate there the coronation of his [Louis] son Philip... who was now in the fifteenth year of his age" (Data from direct source)