Nielsen Hayden genealogy
Ancestors of Boleslaw I Chrobry, King of Poland
Abt 967 - 1025 (~ 58 years) ┌── Ziemomyse, Duke of the Polans ( - Bef 964)
┌── Mieszko I, Duke of the Polans (Abt 935 - 25 May 992)(m. 955)
Boleslaw I Chrobry, King of Poland (Abt 967 - 17 Jun 1025)
│ ┌── Borivoj I of Bohemia (Abt 840 - Abt 889)
│ ┌── Vratislaus I of Bohemia (Abt 888 - 13 Feb 921)
│ │ │ ┌── Slavibor, Prince of Pvov
│ │ └── St. Ludmila of Bohemia (Abt 850 Melnik, Bohemia - 15 Sep 921 Tetin, Bohemia)
│ │
│ ┌── Boleslaus I of Bohemia (Abt 909 - 15 Jul 967)
│ │ └── Drahomira of Stodor (Between 877 and 890 - Aft 934)
│ │
└── Dobrawa of Bohemia ( - 977)(m. 955)