Gian Maria Visconti [SEP] mother
Gian Maria Visconti
Gian Maria Visconti (or Giovanni Maria; 7 September 1388 in Abbiategrasso – 16 May 1412) was the second Visconti Duke of Milan, the son of Gian Galeazzo Visconti and Caterina Visconti. 
Biography.
He assumed the title at thirteen, under his mother's regency. The Duchy of Milan soon disintegrated: among the various parties contending its lands, the condottiero Facino Cane prevailed. 
Taking advantage of Gian Maria's cruelty, he managed to create in him doubts about Caterina, who was imprisoned
Duchess of Milan (1361–17 October 1404), married on 2 October 1380 as his second wife, Gian Galeazzo Visconti 1st Duke of Milan, by whom she had two sons, Gian Maria Visconti, 2nd Duke of Milan; and Filippo Maria Visconti, 3rd Duke of Milan, who fathered Bianca Maria Visconti by his mistress Agnese del Maino.
9. Agnese Visconti (1362–1391), married in 1380 Francesco I Gonzaga, by whom she had one daughter. Agnes was executed for alleged adultery.
10. Antonia Visconti