Liber Flavus Fergusiorum

Liber Flavus Fergusiorum
Royal Irish Academy
Date1437–40
Place of originIreland
LanguageMiddle Irish
Scribe(s)Aedh, Seaán Ó Conchubair, Uidhisdín Mag Raighin
AuthorÓ Fearghuis
MaterialVellum

The Liber Flavus Fergusiorum ("Yellow Book of the Ó Fearghuis"; RIA MS 23 O 48 a-b) is a medieval text (dated to c. 1437-40) authored by the Ó Fearghuis, an Irish medical family of Connacht.