| Bolesław PIAST (BET 1224 AND 1227 - 14 APR 1279) |
| Bolesław II PIAST (BET 1220 AND 1225 - 25 DEC 1278) |
| Bolesław V PIAST (High Duke of Poland, Duke of Sandomierz) (21 JUN 1226 - 7 DEC 1279) |
| Boleslaus I PIAST (1208 - 25 FEB 1247/48) |
| Boleslaus I Chrobry PIAST (King of Poland, Duke of Bohemia) (967 - 17 JUN 1025) |
| Boleslaw PIAST (1156 - 1172) |
| Boleslaw PIAST (ABT 1168 - 16 APR 1183) |
| Boleslaw I PIAST (Duke of Wroclaw) (1126 - 7 DEC 1201) |
| Boleslaw II PIAST (Duke of Poland, King of Poland) (ABT 1042 - ABT 2 APR 1082) |
| Boleslaw II PIAST (BET 1253 AND 1258 - 20 APR 1313) |
| Boleslaw III PIAST (23 SEP 1291 - 21 APR 1352) |
| Boleslaw III PIAST (BET 1322 AND 1330 - 20 AUG 1351) |
| Boleslaw III Wrymouth PIAST (20 AUG 1086 - 28 OCT 1138) |
| Boleslaw IV PIAST (High Duke Supreme Prince) (ABT 1125 - 5 JAN 1172/73) |
| Bolko I PIAST (Duke of Opole) (BEF 21 OCT 1258 - 14 MAY 1313) |
| Casimir PIAST (ABT 1162 - 1 MAR 1166/67) |
| Casimir PIAST (Duke of Opole, Bytom) (BET 1253 AND 1257 - 10 MAR 1311/12) |
| Casimir I PIAST (Duke of Poland) (25 JUL 1016 - 28 NOV 1058) |
| Casimir I PIAST (Duke of Opole-Racibórz) (BET 1179 AND 1180 - 13 MAY 1230) |
| Casimir I PIAST (ABT 1211 - 14 DEC 1267) |
| Casimir I PIAST (Duke of Cieszyn) (BET 1280 AND 1290 - ABT 29 SEP 1358) |
| Casimir I PIAST (BET 1329 AND 1331 - BET 26 NOV AND 5 DEC 1355) |
| Casimir II PIAST (High Duke of Poland, Duke of Masovia) (ABT 1138 - 5 MAY 1194) |
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