Nielsen Hayden genealogy
Ancestors of Boleslaw I of Silesia
Aft 1129 - 1201 (< 70 years)
┌── Wladyslaw I Herman, Duke of Poland 
(Abt 1043 - 4 Jun 1102 Plock, Mazowieckie, Poland)
(Abt 1043 - 4 Jun 1102 Plock, Mazowieckie, Poland) │ (m. Abt 1080) =>
┌── Boleslaw III "Wrymouth", King of Poland (20 Aug 1085 - 28 Oct 1138)
(20 Aug 1085 - 28 Oct 1138) │ └── Judith Premyslid, Princess of Bohemia ( - Between 1093 and 1095)(m. Abt 1080) =>
( - Between 1093 and 1095)(m. Abt 1080) => │
┌── Wladislaw II, King of Poland (1105 - 30 May 1159)(m. Between 1125 and 1127)
(1105 - 30 May 1159)(m. Between 1125 and 1127) │ │
│ │ ┌── Sviatopolk II, Grand Prince of Kiev (1050 - 16 Apr 1113) =>
(1050 - 16 Apr 1113) => │ └── Zbyslava of Kiev ( - Between 1110 and 1111)
( - Between 1110 and 1111) │
Boleslaw I of Silesia (Aft 1129 - 7 Dec 1201)
│
│ ┌── Leopold II von Babenberg (Abt 1050 - 12 Oct 1095) =>
(Abt 1050 - 12 Oct 1095) => │ ┌── St. Leopold von Babenberg (1073 - 15 Nov 1136 Vienna, Austria)(m. 1106)
(1073 - 15 Nov 1136 Vienna, Austria)(m. 1106) │ │ └── Ida of Austria ( - Aft 1101)
( - Aft 1101) │ │
└── Agnes of Babenberg (Between 1110 and 1111 - 25 Jan 1157)(m. Between 1125 and 1127)
(Between 1110 and 1111 - 25 Jan 1157)(m. Between 1125 and 1127) │
│ ┌── Heinrich IV, Holy Roman Emperor (11 Nov 1050 Goslar, Lower Saxony, Germany -
│ │ 7 Aug 1106 Liège, Belgium)(m. 13 Jul 1066) =>
(11 Nov 1050 Goslar, Lower Saxony, Germany -│ │ 7 Aug 1106 Liège, Belgium)(m. 13 Jul 1066) =>
└── Agnes of Germany (1073 - 24 Sep 1143 bur.Klosterneuberg, Austria)(m. 1106)
(1073 - 24 Sep 1143 bur.Klosterneuberg, Austria)(m. 1106) └── Bertha of Turin (1051 - 27 Dec 1087 Mainz, Hessen, Germany)(m. 13 Jul 1066) =>
(1051 - 27 Dec 1087 Mainz, Hessen, Germany)(m. 13 Jul 1066) =>