List of Polish monarchs
Piast dukes and kings

Name
Lifespan
Reign start
Reign end
Notes
Family
Image
Mieszko I of Poland Duke
ca. 940 – 25 May 992
ca. 960
992
Son of Siemomysł First Christian Polish monarch Misico, dux Wandalorum
Piast
-
Bolesław I the Brave Bolesław I the Great Polish: Bolesław I Chrobry (Wielki) King of Poland King
967 – 17 June 1025
Duke: 992 King: 18 April 1025
Duke: 18 April 1025 King: 17 June 1025
Son of Mieszko I and Dobrawa of Bohemia First to be crowned king Regnum Sclavorum, Gothorum sive Polonorum
Piast
-
Mieszko II Lambert King of Poland King
ca. 990 – 10/11 May 1034
1025
1031
Son of Bolesław I and Emnilda of Lusatia
Piast
-
Bezprym Duke
ca. 986–1032
1031
1032
Son of Bolesław I and Judith of Hungary
Piast
-
Otto Bolesławowic Duke
1000–1033
1032
1032
Son of Bolesław I and Emnilda
Piast
-
Dytryk Theoderick Duke
after 992 – after 1032
1032
1032 /1033
Grandson of Mieszko I and Oda of Haldensleben
Piast
-
Mieszko II Lambert Duke
ca. 990 – 10/11 May 1034
1032
1034
Restored
Piast
-
Bolesław the Forgotten Polish: Bolesław Zapomniany Duke
before 1016 – 1038 or 1039
1034
1038 /1039
Semi-legendary, existence disputed
Piast
-
Casimir I the Restorer Polish: Kazimierz I Odnowiciel Duke
25 June 1016 – 28 November 1058 (aged 42)
1039
1058
Son of Mieszko II and Richeza of Lotharingia
Piast
-
Bolesław II the Generous Polish: Bolesław II Szczodry King of Poland King
ca. 1041 or 1042 – 2 or 3 April 1081 or 1082
Duke: 1058 King: 1076
Duke: 1076 King: 1079
Son of Kazimierz I and Maria Dobroniega of Kiev
Piast
-
Władysław I Herman Duke
ca. 1044 – 4 June 1102
1079
1102
Son of Kazimierz I and Maria Dobroniega
Piast
-
Zbigniew Zbygniew Duke
ca. 1073 – 8 July 1113
1102
1107
Son of Władysław I and Przecława of Prawdzic coat of arms (disputed) First jointly with Władysław I 1098-1102
Piast
-
Bolesław III Wrymouth Polish: Bolesław III Krzywousty Duke
20 August 1086 – 28 October 1138 (aged 52)
1107
1138
Son of Władysław I and Judith of Bohemia First jointly with Władysław 1098-1102 Introduced senioral principle
Piast
-

Question: What roles did Boleslaw II have in Polish Royalty?
Answer: Bolesław II the Generous (Polish: Bolesław II Szczodry; c. 1042 – 2 or 3 April 1081 or 1082) was Duke of Poland from 1058 to 1076 and third King of Poland until 1079.