<page_title> Catholic Mariology </page_title> <section_title> Dogmatic teachings </section_title> <table> <cell> Mother of God <col_header> Name </col_header> </cell> <cell> Council of Ephesus (431) <col_header> First Magisterial Definition </col_header> </cell> </table>
Mother of God was formally defined at the Council of Ephesus in 431.