Fortis Gabrielli was born in Gubbio, Umbria, Italy. He lived as a hermit in the mountains near Scheggia, Italy and at the monastery of Fontavellana and was a spiritual student of Blessed Ludolph.
He was also a benedictine monk. He passed away on the 9th of May 1040 AD due to natural causes and was beatified on the 17th of March, 1756 AD by Pope Benedict XIV, confirmed by Cultus.