III Henryk
III was born about 1253 in Glogau, Zielona Gora, Poland.  He died on December 9th, 1309.

 Princess of Brunswick Grubenhagen Mathilde
Princess of Brunswick Grubenhagen was born about 1276 in Braunschweig, Germany.

 IV Henryk
IV was born about 1292 in Glogow, Zielona Gora, Poland.