The three Kings of Cologne takes us pretty far afield. Bodies of the three kings were said to have been brought to Constantinople by Empress Helen, then eventually to Cologne in 1162 by Frederick Barbarossa. The tale is widespread in Catholic countries, especially Spanish.
Even in the southwestern States, the Three Kings bring their gifts to many Latin-Americans and to the Pueblo Indians (in lieu but often in addition to Christmas nowadays); on Jan. 7. It is a day of feasting. At the Indian pueblos, by Spanish edict of 1620, new governors and councilors are elected that day (even though many of the Puebloans do not profess to be Christian).