6 Winfred, afterwards named Boniface by Pope St. Gregory II, was undoubtedly outstanding among the missionaries for his apostolic zeal and fortitude of soul, combined with gentleness of manner. Together with a small but courageous band of companions, he began that work of evangelization to which he had so long looked forward, setting sail from Britain and landing in Friesland. However, the tyrant who ruled that country vehemently opposed the Christian religion, so that the attempt of Boniface and his companions failed, and after fruitless labors and vain efforts they were obliged to return home.
Source: Ecclesiae Fastos (Vatican.va)