He followed this with his Der spanische Erbfolgekrieg und der Churfürst Joseph Clemens von Köln, a study of the War of the Spanish Succession and the role the Elector Joseph Clemens played in this contest, published in 1851.
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Leonhard Ennen's parents were simple farmers, the equivalent of share-croppers in German agricultural society.
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Leonhard Ennen, also spelled Leonard Ennen, (5 March 1820 – 14 June 1880) was a German theologian, historian and archivist born in Schleiden, in the Eifel region of modern-day Germany.
Leonhard Euler | Leonhard Frank | Bad Sankt Leonhard im Lavanttal | Rudolf Leonhard | Leonhard Graf von Blumenthal | Leonhard von Stryk | Leonhard von Hohenhausen | Leonhard Hess Stejneger |