Thank you. For us, in France, Saint Nicholas is a germanic figure (wherever place the real saint lived in), so I trust that he was used by the Church to help evangelize German pagans, the same way it used Saint Mary in western latine empire prior to the Great Invasions. I guess that Wotan/Odin was more appealing to Germans, and a fertility goddess was more appealing to agropastoral celtic and romanized people.