Eberhard III (ca. 885 – 939) was a member of the
Conradine dynasty, who became duke of
Franconia following the death of his older brother, King
Conrad I (or Konrad), in December 918. From 913 he was count of
Hessengau and Persgau, 918 count of Oberlahngau, 914–918 Margrave, and finally until his death duke of Franconia. From 926 to 928 he was simultaneously duke of
Lotharingia.
On his deathbed, in December 918, King Conrad persuaded Eberhard to forgo any ambition for the German crown and to urge the
Prince-electors of the Empire to choose
Henry the Fowler, duke of
Saxony, as his successor at the
Reichstag, which was held in May 919 in
Fritzlar. Conrad considered this the only way to end the long-standing feud between
Saxons and
Franks and to prevent the dissolution of the Empire into smaller states based on the German tribal duchies.
Eberhard remained loyal to King Henry I, and in 926 Henry also conferred to him the troubled and restless duchy of Lotharingia (926–928) which Eberhard quickly stabilized.
After Henry's death, Eberhard soon came into conflict with Henry's son and successor, Emperor
Otto I. In 937 Eberhard
invested Helmern castle near
Peckelsheim, located within the Franconian duchy near the Saxon border, but garrisoned by a Saxon who refused to swear fielty to any non-Saxon. The emperor called the feuding parties to a king's court at
Magdeburg where Eberhard was ordered to pay a fine and his lieutenants were sentenced to carry dead dogs in public, a...
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