William was born in 11th-century Italy to a noble family. He was orphaned as an infant and raised by relatives. At the young age of 14, he made a pilgrimage to Santiago de Compostela in Spain, and decided to devote his life to God as a hermit.
He returned to Italy and lived as a hermit for two years at Monte Solicoli, where he was credited with healing a blind man. At Monte Vergiliano, his reputation for holiness attracted many disciples, and in 1119, he established a monastery with a Rule based on the Benedictines.
Five other houses were formed during his lifetime, but only the original survives today. He died June 25, 1142 of natural causes.
Special Thanks to the Catholic News Agency for supplying the information on this saint.