Nielsen Hayden genealogy
Family: Mieszko II Lambert, King Of Poland / Richeza of Lotharingia (F2489)
m. 1013-
Male
Mieszko II Lambert, King Of Poland
Birth Death May 1034 Burial Marriage 1013 [1] Father Boleslaw I Chrobry, King of Poland | F1041 Group Sheet Mother Emnilda of Lusatia | F1041 Group Sheet
Female
Richeza of Lotharingia
Birth Abt 998 Death 21 Mar 1063 Saalfield, Thuringia, Germany 
Burial Father Ezzo of Lotharingia | F2240 Group Sheet Mother Mathilde von Sachsen | F2240 Group Sheet
Female
+ Adelaide of Poland
Birth 22 Sep 1013 Death Aft 1051 Burial Spouse Béla I, King of Hungary | F352 Marriage Between 1039 and 1043
Male
+ Casimir I, Duke Of Poland
Birth 25 Jul 1016 Krakow, Malowpolskie, Poland Death 28 Nov 1058 Poznan, Wielkopolskie, Poland Burial Spouse Maria Dobronega | F2431 Marriage 1038
Female
+ Gertrude-Olisava of Poland
Birth Abt 1020 Krakow, Malowpolskie, Poland Death 4 Jan 1107 Burial Spouse Iziaslav I, Grand Prince of Kiev | F2312 Marriage Abt 1043
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Sources - [S145] Ancestral Roots of Certain American Colonists Who Came to America Before 1700 by Frederick Lewis Weis and Walter Lee Sheppard, Jr. 8th edition, William R. Beall & Kaleen E. Beall, eds. Baltimore: Genealogical Publishing Company, 2004, 2006, 2008.
- [S145] Ancestral Roots of Certain American Colonists Who Came to America Before 1700 by Frederick Lewis Weis and Walter Lee Sheppard, Jr. 8th edition, William R. Beall & Kaleen E. Beall, eds. Baltimore: Genealogical Publishing Company, 2004, 2006, 2008.