A widely circulated genealogy from the Anglo-Saxon Chronicle says Cerdic was a son of Elesa, King of the Saxons, and a descendant of Odin.
That genealogy is now known to be spurious, having been borrowed from the kings of Bernicia to enhance the prestige of the West Saxon dynasty. Cerdic's name is not Saxon. It's a form of the British name Ceretic (Ceredig, Caradoc).
"Kenneth Sisam has shown that this pedigree resulted from a process of elaboration upon a root pedigree borrowed from the kings of Bernicia, and hence prior to Cerdic himself it has no historical basis." (Kenneth Sisam, "Anglo-Saxon Royal Genealogies", Proceedings of the British Academy, vol. 39, pp. 287–348 (1953))
Shouldn't we disconnect Cerdic from Elesa, and add a curator note?