Soon after his succession , probably in 1058 , Guiscard separated from his wife Alberada because they were related within the prohibited degrees , He quickly re-married Sichelgaita , the sister of Gisulf II of Salerno , Guaimar 's successor .
Soon after his succession , probably in 1058 , Guiscard separated from his wife Alberada because they were related within the prohibited degrees . 
 Shortly after , he married Sichelgaita , the sister of Gisulf II of Salerno , Guaimar 's successor .