January 20 is the feast date of Christian martyr Saint Baudilus, patron of Nîmes, France — also known as Baudilio or Baudelio in Spain, where his cult is also quite widespread.
Baudilus supposedly dropped into a festival of the Roman god Vejovis in the late third century and paid his respects by desecrating the pagan shrine, with predictable consequences for Baudilus.
Baudilus was neither a native of that place nor the first to carry the religion of the Galilean there, but his spectacular and confrontational martyrdom granted Baudilus pride of place locally as Christianity rose.
The location of his tomb, called Valsainte, became a pilgrimage destination and eventually the place of a church and monastery; three springs of water were by legend attributed to the holy bounces of the saint’s decapitated head, and an oratory built for them dedicated to Baudilus.
His cult spread widely in southern France and especially in Spain where you can call him Baudilio, Baudelio, or even Boal. There are over 400 churches named for him, notably San Baudelio de Berlanga in central Spain, a hermitage nearing its thousandth year and renowned for its ancient friezes.