[citation needed] While his predecessor, Aldgisl,[1] had welcomed Christianity into his realm, Radbod attempted to extirpate the religion and gain independence from the kingdom of the Franks.
Around this time there was an Archbishopric or bishopric of the Frisians founded for Willibrord[3] and a marriage was held between Grimoald the Younger, the oldest son of Pepin, and Thiadsvind, the daughter of Radbod in 711.
He forced Saint Willibrord and his monks to flee and advanced as far as Cologne, where he defeated Charles Martel,[5] Pepin's natural son, in 716.
As an example of how powerful King Radbod still was at the end of his life, the news that he was engaged in assembling an army was reportedly enough to fill the Frankish kingdom with fear and trembling.
[4]: 794 During the second journey of Saint Boniface to Rome, Wulfram, a monk and ex-archbishop of Sens, tried to convert Radbod, but after an unsuccessful attempt he returned to Fontenelle.
In Harry Harrison's The Hammer and the Cross series of novels, Radbod becomes the founder of "the Way", an organized pagan cult, created to combat the efforts of Christian missionaries.
In 2015 the Frisian Folk-Metal band Baldrs Draumar[9] released a full album on the life and deeds of king Redbad called Aldgillissoan.