 His two works on Wales remain very valuable historical documents, useful for their descriptions – however untrustworthy and inflected by ideology, whimsy, and his unique style – of Welsh and Norman culture.It is uncertain whether Gerald was a Welsh speaker; although he quotes Welsh proverbs and appears familiar with the language, he seems not to have been employed as an interpreter for the expedition.As a royal clerk, Gerald observed significant political events at first hand, and was offered appointments as bishoprics of Wexford and Leighlin, and apparently at a little later time the bishopric of Ossory and the archbishopric of Cashel, and later the Welsh Bishopric of Bangor and, in 1191, that of Llandaff.