Columbia subject headings:
Harvard subject headings:
Christian saints--Germany--Biography
Christian saints--Netherlands--Biography.
Missionaries--Netherlands--Biography.
Wilgils, Saint.
Willibrord, Saint, 658?-739
Princeton subject headings:
Christian saints--Germany--Biography.
Christian saints--Netherlands--Biography.
Missionaries--Netherlands--Biography.
Wilgils, Saint.
Willibrord, Saint, 658?-739.