Galgano Guidotti was a Catholic saint from Tuscany born in Chiusdino, in the modern province of Siena, Italy. His mother's name was Dionigia, while his father's name only appeared in a document dated in the 16th century, when the last name Guidotti was attributed. He is known for the Sword in the Stone relic by the ruins of the Abbey of San Galgano near Siena.