Ludwig III Von Schlesien-Liegnitz
Ludwig III Von was born about 1400.  He died in 1441.

 Margareta Von Schlesien-Oppeln
Margareta Von was born about 1405.  She died on January 15th, 1454.

 Johann II Von Schlesien-Liegnitz
Johann II Von was born about 1425.  He died in 1453.