Career
At Merseburg, Jaromír promised to hold Bohemia as a vassal of Henry. This action definitively placed Bohemia within the jurisdiction of the Holy Roman Empire. In 1004, Jaromír occupied Prague with a German army and made himself Duke.
The state he regained was a small one, as Polish forces still held Moravia, Silesia, and Lusatia. Jaromír's reign—like so many of the other early Czech rulers—was a struggle to regain lost lands. In 1012, Jaromír was dethroned by Oldřich (who had him blinded) and forced once again into exile.
In a surprise campaign, Jaromír in turn managed to depose Oldřich (1033), but his second reign was short-lived.