Nielsen Hayden genealogy
(Unknown) of Kiev
Generation: 1
Generation: 2
Generation: 3
Generation: 4
1. (Unknown) of Kiev (Unknown) married Bernhard von Haldensleben between 991 and 992. Bernhard (son of Dietrich von Haldensleben) died after 1044. [Group Sheet] [Family Chart]
Children:
Generation: 2
2. Conrad von Haldensleben 
(1.(Unknown)1)Family/Spouse: Unknown. [Group Sheet] [Family Chart]
Children:
- 3. Gertrude von Haldensleben died on 21 Feb 1116.
- 3. Gertrude von Haldensleben
Generation: 3
3. Gertrude von Haldensleben (2.Conrad2, 1.(Unknown)1) died on 21 Feb 1116. Family/Spouse: Frederick of Formbach. Frederick (son of Tiemo of Formbach) was born about 1020; died about 1060. [Group Sheet] [Family Chart]
Children:
- 4. Hedwig of Formbach died between 1085 and 1090.
- 4. Hedwig of Formbach
Generation: 4
4. Hedwig of Formbach (3.Gertrude3, 2.Conrad2, 1.(Unknown)1) died between 1085 and 1090. Family/Spouse: Thierri II of Lorraine. Thierri (son of Gerard of Lorraine and Hedwig of Namur) died in 1115. [Group Sheet] [Family Chart]
Children:
- 5. Petronella de Lorraine died on 24 May 1144.
- 6. Simon I of Lorraine was born about 1076; died on 14 Jan 1138.
Family/Spouse: Gebhard. Gebhard (son of (Unknown father of Count Gebhard of Süpplinburg) and Ida) died on 9 Jun 1075. [Group Sheet] [Family Chart]
Children:
- 7. Lothar II von Süpplinburg, Holy Roman Emperor was born before 9 Jun 1075; died on 4 Dec 1137.
- 5. Petronella de Lorraine