Galeazzo Maria Sforza (1444 – 1476). Fifth Duke of Milan from 1466 until his death. Husband of Bona of Savoy. Father of Gian Galeazzo Sforza and son of B. Maria Visconti.
More pictures here http://www.kleio.org/en/history/famtree/vip/631/…
and here http://www.kleio.org/en/history/famtree/vip/829/… (he's the Child Jesus).
- "Gian Galeazzo was tall and well built, with the reddish hair and striking good looks of his father..." https://books.google.it/