Various theories have been put forward regarding the relationship between Eochaid and Giric, who by all accounts was the elder of the two.
The Chronicle of the Kings of Alba, which was written in Latin, used the phrase
alumnus ordinatorque to describe relationship of Giric to Eochaid. Translator T. H. Weeks chose to translate that phrase into English as "teacher and prime minister", yet in the same section offered "
foster-son" for
alumnus, translating "
Eochodius, cum alum(p)no suo, expulsus est nunc de regno" as "Eochaid with his "foster-son" was then thrown out of the kingdom". There is a tendency in popular history books and web sites to refer to the two as "
cousins" or "first cousins once removed". However, this cousin kinship is only speculation since the ancestry of Giric is obscure. Rhun, the father of Eochaid, is known to have been "a
king of the Britons", but little is known of Dungal, the father of Giric, which may be the reason for the speculation that he (Dungal) did not have a royal lineage. Perhaps a writer for the popular web site
Undiscovered Scotland found the best solution, referring to Giric as Eochaid's "rather shadowy kinsman". Two scholars have defined the two in political rather than kinship terms. A. Weeks, commentator, speculated, "Possibly Giric was not of royal blood, so he used Eochaid as a puppet". In 1904, Sir
John Rhys, professor at
University of Oxford, reached a similar conclusion, positing that "the real relation in which Girg probably stood to Eochaid was that of a non Celtic king of Pictish descent wielding the power of the Pictish nation with Eochaid ruling among the
Brythons of
Fortrenn more or less subject to him". What is known of the two is that in 878 Giric killed Aed (uncle of Eochaid) "in battle" in the town of Nrurim, which was probably north of
Stirling. Then Giric and Eochaid, whatever their relationship, ruled jointly for eleven years. == Son of Fortune ==