Gilbert de la Porrée and William of Conches were students of his, and some information about his work comes through their writings, as well as the writings of John of Salisbury.
Stephen of Alinerre or Stephen of Beauvais was a student of Gilbert de la Porrée and canon of Beauvais.
Gilbert and Sullivan | W. S. Gilbert | Humphrey Gilbert | Gilbert | Gilbert O'Sullivan | Gilbert Gottfried | Gilbert Burnet | George Gilbert Scott | Gilbert Islands | Gilbert du Motier, marquis de Lafayette | Gilbert, Arizona | Cass Gilbert | Paul Gilbert | Giles Gilbert Scott | Gilbert Stuart | Gilbert de Clare | Brantley Gilbert | Hurricane Gilbert | Gilbert du Motier, Marquis de Lafayette | Gilbert Arenas | L. Wolfe Gilbert | Gilbert White | Gilbert Elliot-Murray-Kynynmound, 1st Earl of Minto | Gilbert Bécaud | Chad Gilbert | Philippe Gilbert | Melissa Gilbert | Gilbert Jessop | Gilbert Heathcote-Drummond-Willoughby, 1st Earl of Ancaster | Gilbert Elliot-Murray-Kynynmound, 4th Earl of Minto |
About 1140 he was at Paris studying theology under Gilbert de la Porrée, then under Robert Pullus and Simon of Poissy.
This hypothesis rests in part on the assumption that Fantosme integrated some characteristics of Occitan verse (perhaps coblas by the troubadour Jaufre Rudel) he encountered during a stay in Poitiers in the 1140s, where he probably studied under Gilbert de la Porrée.