Input (grade 13): According to some authors, he was descended from Jews forcibly converted to Catholicism after 1492, and one of his forebears had been burned by the Inquisition for secretly continuing to practice Judaism.
Output (grade 9): He was descended from Jews who were made to converted to Catholicism after 1492. One of his forebears had been burned by the Inquisition for secretly continuing to practice Judaism.