What if this prince lives to succeed to the throne, and it's his brother Afonso who instead dies in 1653?D. Teodósio was a very gifted young man. He knew Greek and Latin, was keen on philosophy and well respected amongst the great intellectuals of the time.
The Prince had a great interest in Astrology. He had a collection of charts of his family and made predictions on several political subjects. His astrological interests were encouraged and aided by his tutor, the Jesuit priest António Vieira. Under the tutelage of astrologers of the day, he composed many astrological charts.
I wonder if a marriage of him to La Grande Mademoiselle can be possible or will it be considered impractical in view of peace talks with Spain?