"Infanta Isabella Clara Eugenia of Spain was born in Segovia in 1566, daughter of Philip II of Spain & his 3rd wife Elisabeth of Valois. Her father, Philip II, was reportedly overjoyed at her birth & declared himself to be happier on the occasion than he would have been at the birth of a son. Philip already had a male heir, Don Carlos of Spain, the child of his 1st marriage to Infanta Maria of Portugal; however, father & son never developed a close relationship." http://bjws.blogspot.nl/2015