||This article may be expanded with text translated from the corresponding article in the Czech Wikipedia. (January 2011)|
Sedláček was born in Mladá Vožice, Bohemia. Notably, he worked in medieval history, detailing the history of Medieval castles in the Bohemian Kingdom. He wrote among others extensively on autonomous region of Prachens in the southwest of Bohemia in 1926 (Děje Prachenského Kraje, Písek).
- Hrady, zámky a tvrze království českého, 15 vols., 1882–1927.
- Extensive Biography (Czech)
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