
St. Willibrord
St. Willibrord was a Christian bishop from Britain; he evangelized the Frisians in what is now Germany, the Netherlands, Belgium, and Luxembourg, traveling the land and ordaining priests for each village he evangelized. He is known as the apostle to the Frisians. He is counted as an intercessor for persons with epilepsy and convulsions.
Sources:
http://www.magnificat.ca/cal/engl/11-07.htm