After many years of seclusion and prayer, he traveled to Gaul with 12 companion missionaries. They won wide respect for the rigor of their discipline, their preaching, and their commitment to charity and religious life in a time characterized by clerical slackness and civil strife. Columban established several monasteries in Europe which became centers of religion and culture.
Like all saints, he met opposition. Ultimately he had to appeal to the pope against complaints of Frankish bishops, for vindication of his orthodoxy and approval of Irish customs. He reproved the king for his...