Complex sentence: They were legitimized on 25 April 1456, by King Henry IV of Castile: By an unknown woman, he fathered Alonso, Rodrigo, Beatrice, and Leonor Pacheco.
Split into simpler sentences: They were legitimized on April 25,1456, by King Henry IV of Castile:. From an unknown mother, he fathered Alonso, Rodrigo, Beatrice, and Leonor Pacheco.