Eugen Alexander Franz, 1st Prince of Thurn and Taxis

Eugen Alexander Franz, Prince of Thurn and Taxis, full German name Eugen Alexander Franz Frst von Thurn und Taxis was the first Prince of Thurn and Taxis, Postmaster General of the Imperial Reichspost, and Head of the House of Thurn and Taxis fromSeptember 1676 until his death.

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Source: Wikipedia