Holy grail found?

[Minimalist]

Eostre

In the second volume of Deutsche Mythologie, Grimm picks up the subject of Ostara again, connecting the goddess to various German Easter festivities, including Easter eggs:

But if we admit, goddesses, then, in addition to Nerthus, Ostara has the strongest claim to consideration. To what we said on p. 290 I can add some significant facts. The heathen Easter had much in common with May-feast and the reception of spring, particularly in matter of bonfires. Then, through long ages there seem to have lingered among the people Easter-games so-called, which the church itself had to tolerate : I allude especially to the custom of Easter eggs, and to the Easter tale which preachers told from the pulpit for the people's amusement, connecting it with Christian reminiscences.[10]