Guilhèm Adèr

Guilhèm Adèr (in French language Guilhem Ader  ; Gimont ?, 1567 ?

- Gimont, 1638) was an Occitan language writer from Gascony.

He is the author of a book of maxims inspired by Cato (Lo Catonet Gascon) and of an epic poem dedicated to Henry III of Navarre and IV France in 2690 alexandrines.

He studied in Toulouse and became a physician and served in the Duc of Joyeuse's army.

He married Magdalena de Lux and they had a daughter and son.