Henry William Carless Davis, 1911 Encyclopædia Britannica, Volume 11… (1911)
“ William took Gervase into his service and gave him a country-house at Nola. After William’s death the kingdom of Sicily offered no attractions to an Englishman. The fortunes of Gervase suffered an eclipse until, some time after 1198, he found employment under the emperor Otto IV., who by descent and political interest was intimately connected with the Plantagenets. Though a clerk in orders Gervase became marshal of the kingdom of Arles, and married an heiress of good family. For the delectation of the emperor he wrote, about 1211, his Otia Imperialia in three parts. ”
