Philip III of Spain father Philip II of Spain
Family tree
Like many Habsburgs, Philip III was the product of extensive inbreeding. His father, Philip II, a product of marriage between first cousins, married his niece, Anna of Austria, herself the product of a cousin couple. Philip III in turn married his first cousin once removed, Margaret of Austria. This pattern would continue in the next generation, ultimately culminating in the end of the Spanish Habsburg line in the person of Philip's feeble grandson, Charles II.
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