Elisabetta 's sister , Taddea Visconti married Stephen III , Duke of Bavaria and was mother of Isabeau of Bavaria , wife of Charles VI of France .
Head entity: taddea visconti Q271801 4 5
Tail entity: isabeau of bavaria Q154064 17 18 19
Relation (head \u2192 tail): P25
Inverse relation (tail \u2192 head): P40