- s. xvi1
- s. xvi1
- Giolla Riabhach mac Tuathail Ó Cléirigh
Seven paper leaves which have been inserted at the beginning of BL MS Harley 5280. They contain four Latin tracts in an early 17th-century hand which Robin Flower has ascribed to Hugo Casserly (anglicised form of Mac Casarlaigh), who owned the vellum manuscript and may also have authored or compiled the Latin texts he added.
- s. xvii
- Hugo Casserly