┌─Wenceslaus I Duke of Saxe-Wittenberg
┌─Rudolf III Duke of Saxe-Wittenberg
│ │ ┌─Giacomo II of Carrara
│ │ ┌─Francesco I of Carrara
│ └─Cecelia of Carrara
│ └─Fina Buzzaccarini
Barbara of Saxe-Wittenberg
│ ┌─Wenceslaus I Duke of Legnica
│ ┌─Rupert I Duke of Legnica
│ │ │ ┌─Casimir I Duke of Cieszyn
│ │ └─Anna of Cieszyn
└─Barbara of Legnica
└─Hedwig of Sagan