During this time, he studied under
Ecgberht of Ripon, who sent him and eleven companions to Christianise the pagan Frisians of the North Sea coast at the request of
Pepin of Herstal,
Austrasian
mayor of the palace, who had nominal
suzerainty over that region. Willibrord travelled to Rome twice. Both of these trips to Rome have historical significance. According to
Bede, Willibrord was not the only Anglo-Saxon to travel to Rome. The way he described the visit and its purpose is important: unlike the others, Willibrord was not on the usual pilgrimage to the graves of the apostles Peter and Paul and the martyrs. Rather, "he made haste to Rome, where Pope Sergius then presided over the apostolical see, that he might undertake the desired work of preaching the Gospel to the Gentiles, with his licence and blessing". As such, he came to the pope not as a pilgrim but specifically as a missionary. On 21 November 695, during his second visit to Rome, in the Church of
Santa Cecilia in Trastevere,
Pope Sergius I gave him a
pallium and consecrated him as bishop of the Frisians. He returned to
Frisia to preach and establish churches, among them a monastery at
Utrecht, where he built his
cathedral. Willibrord is counted as the first
bishop of Utrecht. In 698, he established the
Abbey of Echternach on the site of a Roman villa in
Echternach, which was donated to him by Pepin's mother-in-law,
Irmina of Oeren, the wife of
seneschal and Count Palatine
Hugobert. After Hugobert died, Irmina founded a Benedictine convent at Horren in
Trier. When a plague threatened her community, she gained the help of Willibrord; and when the pestilence passed by the convent, she gave Willibrord the lands for his abbey in Echternach. Pepin of Heristal died in 714. In 716, the pagan
Radbod, king of the Frisians, retook possession of Frisia, burning churches and killing many missionaries. Willibrord and his monks were forced to flee. After the death of Radbod in 719, Willibrord returned to resume his work under the protection of
Charles Martel. He repaired the damage done there, ably assisted by
Boniface. ==Veneration==