Original: The Poles , who do not wish to be ruled by Mary 's fiancee , the future Holy Roman Emperor Sigismund , choose Mary 's younger sister , Jadwiga , to become ruler of Poland .
Simplified: The Poles , who did not wish to be ruled by Marys fiancee , the future Holy Roman Emperor Sigismund , choose Marys younger sister , Jadwiga , to become ruler of Poland .