These are the dates for their reign, beginning to end. There are some cases where the end of the reign was not the end of their life, so I give the death date if I know it. I have tried to give some indication (where I can) of how they died (or ended their reign.)
ab. = abdicated, kib. = killed in battle, as. = assassinated, ex. = executed, dep = deposed
Lesko IV 892-921
Boleslaw I "the Brave" 992-1025 d.
Mieszko II 1025-1034 Dep?
Chaos and Confusion 1034-1037
Casimir I 1037-1058 d.
Chaos and Confusion (again) 1058-1076
Boleslaw II 1076-1079 ass.
Vladislav Hermann 1079-1102
Boleslaw III 1106-1138
Vladislav II 1138-1146
Boleslaw IV 1146-1173
Casimir II 1178-1194
Lesko V 1194-1227
Boleslaw V 1227-1279
Chaos and Confusion (again!) 1279-1295
Przemysl 1295-1296 ass.
Chaos and Confusion 1297-1300
Waclaw 1300-1305 d. also Vaclav II King of Bohemia
Waclaw II 1305-1306 ass. also Vaclav III King of Bohemia 1305-1306
Vladislav IV (Lokietek) 1306-1333
Casimir III (the Great) 1333-1370
Ludvik (the Great) 1370-1382 (Louis) of Anjou
also Lojos I King of Hungary 1342-1382
Jadwiga (Queen) 1382-1399 m. Jagiello, King of Lithuania in 1386
Vladislav V Jagiello 1386-1435
Vladislav IV 1435-1445 kib also King of Hungary 1440-1445
Casimir IV 1445-1492
John I Albrecht 1492-1501
Sigismund II 1506-1548
Henry 1572-1574 of Valois
Stephen Bathory 1575-1586
Sigismund III 1587-1632 also King of Sweden 1592-1604