Born to the Bavarian nobility; nephew of Saint Sturmi of Fulda. Educated in Fulda, Germany in the monastery of his uncle Sturmi. Eigil became a Benedictine monk in Fulda. Priest. Teacher at the monastery school. Abbot of the monastery in 817, a house that was in decline at that point. He restored the community, built churches, founded another house, and trained his successor, Saint Rabanus Maurus.