Margrave
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In the German nobility, margrave was a rank equivalent to marquess. It originated as the medieval title for the military commander assigned to maintain the defence of one of the border provinces of th
Seal of Leopold III, Margrave of Austria (r. 1095–1136), with legend LEVPOLDVS MARCHIO.
Obertenghi
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The House of Obertenghi was an Italian noble family of Longobard origin. The family rose to prominence in the 10th and 11th centuries. It traced its lineage to Viscount Adalbert III, a Frankish noble
The Torre degli Obertenghi in Arcola, Liguria, traditionally associated with the Obertenghi family.
