MIESZKO I PRINCE de UPPER SILESI
MIESZKO I PRINCE de UPPER was born about 1150.¹   He died on May 16th, 1211.¹ 

 LUDMILLA SILESIA
LUDMILLA was born about 1155.¹   She died after October 20th, 1210.¹ 

 KASMIR DUKE de OPPELN
KASMIR DUKE was born about 1176.¹