Original: His sister, Anna Maria Luisa de 'Medici, the Electress Palatine, married him to Anna Maria Franziska of Saxe-Lauenburg, a wealthy widow, in 1697.
Simplified: His sister, Anna Maria Luisa de 'Medici, the Electress Palatine, married him to Anna Maria Franziska of Saxe-Lauenburg in 1697.