Ziemowit Ksiaz Of Masowski Prince

 Perejaslaw Of Halic Countess
She died on April 12th, 1283.  She was buried in April 1283.

 Boleslav II Of Mazovia Prince
Boleslav II was born in 1270.  He died at the age of 43 in 1313.  He was buried in 1313.