Guidi di Bagno  Guidi di Bagno is an old Italian noble family which moved first into Romagna (Bagno di Romagna) and then into Mantua from the 14th century. The branch of the family originated from Riccardo count Guidi di Bagno who married Philippa Gonzaga, Feltrino Gonzaga niece. Among the most important leaders of this family, it may be noted: