Despite a frustrated ecclesiastical career - his ongoing failure to secure the See of St David's embittered him - Giraldus Cambrensis (Gerald of Wales, Gerald de Barry, c.1146–1220/23) composed many remarkable literary works, initially while employed as a royal clerk for Henry II and, subsequently, in semi-retirement in Lincoln. Eight volumes of his works were compiled as part of the Rolls Series of British medieval material. Volume 8, edited by archivist George F. Warner (1845–1936) and published in 1891, contains his 'Liber de principis instructione', a moral treatise including much invective against the Angevin court. Written while Louis of France - in whose support Giraldus composed a poem - was scheming to replace King John, the Latin text, in Giraldus' vigorous and anecdotal style, gives a vivid picture of contemporary politics, while the English introduction illuminates nineteenth-century interest in the period.