Bolesław I of Masovia

Born

1210

Died

post 25.02.1248

Titles

• Duke of Masovia
• Duke of Sandomierz
• Duke of Sieradz

Relations

• father: Konrad I of Masovia
• mother: Agafia Svyatoslavna

Bibliography

• Kazimierz Jasiński, Rodowód Piastów śląskich, Avalon, Kraków 2007
• Janusz Grabowski, Dynastia Piastów mazowieckich, Avalon, Kraków 2012