Late Middle Ages (15th century)
Feast: September 25
A Swiss farmer and father of ten who left his family — with their permission — to live as a hermit, ate nothing but the Eucharist for twenty years, and saved Switzerland from civil war.
Nicholas von Flue had been a soldier, a judge, a farmer, and the father of ten children when, at fifty, he told his wife Dorothea he needed to leave. She agreed. He walked away from one of the most functional families in the canton of Obwalden and settled into a tiny hermitage in the Ranft gorge, a short walk from his farmhouse. For the next twenty years, he reportedly consumed nothing but the Eucharist — no food, no water. Church authorities investigated the claim multiple times and could not disprove it; the local bishop posted guards. His neighbors were skeptical at first, then awed. People started coming to him for advice: peasants, priests, politicians. In 1481, when the Swiss Confederation was on the brink of civil war over the admission of new cantons, delegates at the Diet of Stans were deadlocked. Someone rode to Nicholas's cell in the middle of the night and brought his counsel back to the assembly. Whatever he said worked — the crisis resolved within hours, and the compromise he brokered held Switzerland together. He died in 1487 and remains the patron saint of Switzerland. The Swiss still call him 'Brother Klaus.'