He was natural around Conches, Normandy. His teaching activity extended from either c. 1120 to 1154. He became all about a season 1122, the coach of Henry Plantaganet. These are imaginable, however uncertain, that he was teaching at Chartres before that. Warned by a friend of a danger implied around his Platonic realism when he applied it to theology, he took higher the survey of philosophy & the physical science of the Arabians. After & in which he died occurs as matter of uncertainty. John of Salisbury, the late bishop of Chartres, a student of William's, reports that William got been a virtually all gifted syntactician fallowing Bernard of Chartres.

William devoted very much attention to cosmology and psychology. With been the student of Bernard's, he shows a characteristic Humanism, a tendency towards Platonism, & a taste for natural science which distinguish the "Chartrains". He is one of a foremost of the mediaeval Christian philosophers to require benefit of the physical & physiologic traditional knowledge of the Arabians. He got access to the writings of the Arabians in the translations mass produced by Constantine the African. William of St. Thierry, who had encouraged Bernard of Clairvaux to prosecute Abelard, attacked Conches's Philosophia for having a modalist view of the [[Holy Trinity] in another letter to Bernhard. William in consequence revised some controversial parts in the Dragmaticon.

Works
There is a good deal of discussion in regard to the authorship of the works ascribed to William. It seems probable, however, that he wrote glosses on Plato's "Timaeus", a commentary on Boethius's "Consolations of Philosophy" and Priscian's Institutiones Grammaticae, , and Macrobius's In Somnium Scipionis. He is probably the author of a dialogue called "Dragmaticon", and a treatise, "Magna de naturis philosophia". Moralium Dogma Philosophorum, a book on ethics was attributed to him from the 1920s, but authorship of William is now excluded by most scholars.

The Philosphia is divided into four books, covering astronomy, geography, meteorology and medicine. The discussion of meteorology includes the description of air becoming less dense and colder as the altitude increases and William attempt to explain circulation of the air in connection with circulation of the oceans. The discussion of medicine is chiefly dealing with procreation and childbirth. William's Philosophia influenced Jean de Meung, the author of the Roman de la Rose.

Editions
"De philosophia mundi" is edited under the name of Bede, in the Patrologia Latina, vol. 90, and under the name of Honorius Augustodunensis, in vol. 172. Gregor Maurach, Philosophia Mundi ; Wilhelm von Conches : Ausgabe des 1. Buchs von Wilhelm von Conches "Philosophia" (Pretoria: University of South Africa, 1974). Italo Ronca, Guillelmi de Conchis Dragmaticon, Corpus Christianorum Continuatio Mediaevalis 152. Turnhout: Brepols, 1997. ISBN 2503045219 (hardback); ISBN 2503045227 (paperback) Lodi Nauta, Guillelmi de Conchis Glosae super Boetium, Corpus Christianorum Continuatio Mediaevalis 158. Turnhout: Brepols, 1999. ISBN 250304582 (hardback); ISBN 250304580 (paperback) Paul Edward Dutton ,Philosophia (Simon Fraser University, forthcoming) Helen Rodnite Lemay, Glosae super Macrobium (State University of New York at Stony Brook, forthcoming) Édouard Jeauneau, Glosae super Platonem (Pontifical Institute of Mediaeval Studies, forthcoming) Irene Caiazzo, Glosae super Priscianum (CNRS, Paris, forthcoming)