I Casimir
I was born on July 25th in 1016.  He died in 1057.

 Dobronega Marie
Dobronega was born before 1015.  She died in 1087.

 Wladyslaw I Herman
Wladyslaw I was born in 1043.  He died at the age of 59 on June 4th, 1102 in Plotzk, Poldan.