Complex sentence: The story that King Philip IV of Spain purchased the jewel and included it in the dowry of his teenage daughter, Margaret Teresa in 1664 is apocryphal; the first time the diamond was mentioned is about fifty years later when it was already in Vienna.
Split into simpler sentences: The story that King Philip IV of Spain purchased the jewel and included it in the dowry of his teenage daughter, Margaret Teresa, in 1664 is apocryphal. The first time the diamond was mentioned is about fifty years later when it was already in Vienna.