Person
Don John of Austria
Spanish military leader
John of Austria (24 February, 1547 - 1 October 1578), in English traditionally known as Don John of Austria, and in Spanish as Don Juan de Austria, is an illegitimate son of Holy Roman Emperor Charles V. He becomes a military leader in the service of his half-brother, Philip of Spain and is best known for his naval victory at the Battle of Lepanto in 1571 against the Ottoman Empire.