Career
Nothing is known about his life. The 935 verses were written in the French language. They describe the geography of the world.
All the geography information is found in well-known earlier Latin works.
Perot states that he "read a very learned book in Latin which many clerics said could not be translated into vernacular rhyme". On the basis of his name, he may have been from a location called Galbally, id est (that is) if Garbalei is a variant of Galbalei.
Several villages or townships in south Wexford bear the name Galbally. A translator from Latin, thus he may have been a cleric - there was a Franciscan house at Galbally.
The Divisiones Mundi is a 935 six-syllable lines in couplets, and a concise survey of world geography, its sources being De Philosophia Mundi and De Imagine Mundi.