Nielsen Hayden genealogy
Descendants of Boleslaus I of Bohemia
Abt 909 - 967 (~ 58 years)Father: Vratislaus I of Bohemia (Abt 888 - 13 Feb 921)
Mother: Drahomira of Stodor (Between 877 and 890 - Aft 934)
Boleslaus I of Bohemia (Abt 909 - 15 Jul 967)
   ├─ Dobrawa of Bohemia ( - 977)
   │ Mieszko I, Duke of the Polans (Abt 935 - 25 May 992)(m. 955)
   │    └─ Boleslaw I Chrobry, King of Poland (Abt 967 - 17 Jun 1025)
   │     Emnilda of Lusatia (Between 970 and 975 - Between 1013 and 1017)
   │        └─ Mieszko II Lambert, King Of Poland ( - May 1034) =>
   │         + Richeza of Lotharingia (Abt 998 - 21 Mar 1063 Saalfield, Thuringia, Germany)(m. 1013)
   └─ Boleslaus II of Bohemia (Abt 932 - 7 Feb 999)
    Emma of Melnik (Bef 950 - Between 1005 and 1006)
       └─ Oldrich of Bohemia (Abt 970 - 9 Nov 1034)
        Božena ( - 1052)
           └─ Bretislaus I (Between 1002 and 1005 - 10 Jan 1055) =>
            + Judith of Schweinfurt ( - 2 Aug 1058 bur.St. Vitus Cathedral, Prague, Bohemia)(m. Aft 1021)