Gian Galeazzo Visconti first Duke of Milan (1351-1402) (1351–1402) Parents Bianca of Savoy Galeazzo II Visconti Children Gabriele Maria Visconti Gian Maria Visconti Filippo Maria Visconti Antonio Visconti Valentina Visconti, Duchess of Orléans Siblings Violante Visconti Beatrice Visconti Partners Isabella, Countess of Vertus Caterina Visconti
