I am getting into comparative religious linguistics, and Eostre is related to Eos…I know. It is a stretch.
So, that has me thinking of Eostre as a Jotun, or as a primordial goddess. The first generation was Odin, in Norse cycle, so that would mean a need to compare with German sources…but those have been destroyed by Abrahamic invasions, so that is impossible.
Time for some musing on this.