Don Juan de Austria around 1572.
Spanish court dress. 16th century baroque era.
Don Juan de Austria (Knight John of Austria; born February 24, 1547 Regensburg; † 1 October 1578 in Bouge, part of today Namur) was commander of the Spanish fleet and governor of the Habsburg Netherlands. He was the illegitimate son of Emperor Charles V and civil Barbara Blomberg of Regensburg.
Source: “Sheets for costume design: historical and folk costumes. Published by Franz Lipperheide, 1876-1887.