Gradinja is one of many persons (alongside Branislav, Gojislav, Georgije and Grubeša among others) mentioned only in the Chronicle of the Priest of Duklja (CPD), not found in Byzantine sources as the other Serbian rulers and royalty.
Gradinja is one of several individuals (Branislav, Gojislav, Georgije, and Grubeša) mentioned exclusively in the Chronicle of the Priest of Duklja (CPD), but these figures are not found in Byzantine records as part of the Serbian nobility.