Feast day: April 18
Saint Galdinus was the archdeacon to Archbishop Hubert of Milan in the twelfth century. Galdinus stood by the Pope of Rome during the schism of 1159. He was forced into exile when Emperor Frederick I Barbarossa sacked the city in support of the antipope. Galdinus eventually replaced Hubert as archbishop. He returned to Milan after the war was over to help rebuild the city.
Saint Galdinus was especially concerned with those who were poor and those who were in prison due to debt. Saint Galdinus died after preaching against heresies.