Spanish Royal Bastards c.1500s

Does anyone have in-depth information on the royal bastards of Spain during the 1500s?

Ferdinand the Catholic, Philip I, Charles V and Philip II all had their fair share of women and (I believe) bastards. I'm having difficulty to uncover their bastard children and what was the general policy towards them - besides Don Juan, it seems clerical office or seclusion were the only options "allowed" them. It also seems there was a conscious difference in deciding whether or not to recognize a bastard publicly and granting them a new name, or not - apparently Philip II had three bastards (other sources are saying two) by Doña Isabel de Osorio, but I can't uncover any information on them or their later careers.

Any help would be greatly appreciated.
 
I don't know a great deal, especially concerning the practices in Castile or under the Habsburgs. In Aragon, though, the situation was somewhat straightforward...

—Alfonso V had no legitimate offspring and three bastards with his longtime mistress Giraldona Carlino. The girls married into powerful Italian feudal families and the boy, Ferrante, was given the kingdom of Naples in a particularly exceptional arrangement.

—John II had two bastard sons that I know of. One was created Duke of Vilahermosa and granted considerable lands and honours; the other was made Archbishop of Zaragoza and had a lucrative career in the Church.

—Ferdinand II insisted that his bastards be raised at court, alongside his children by Isabella. The most famous, Alfons d'Aragó, became Archbishop of Zaragoza at the age of eight and later acted as viceroy in Aragon. There were also a couple daughters, I think; one married a grandee and the other was made an abbess. Interestingly enough, all of Alfons' own bastard sons were legitimated and likewise held high office.

Anyway, that's the best I can do. Hopefully this helps.
 
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