Through his father, Paul Wilhelm was a grandson of Frederick II Eugene, Duke of Württemberg and his wife Friederike Dorothea of Brandenburg-Schwedt.

He spent time exploring the western United States and met the son of Sacagawea, Jean Baptiste Charbonneau.

The Duke’s party spent five months in the upper Missouri country visiting trading forts, Indian tribes, and collecting scientific data.

As late as the 1850s, he visited Baron Ottomar von Behr, a German farmer and sheep breeder, meteorologist, and scientist living in Sisterdale, Texas.

1831: Honorary citizenship in Bad Mergentheim 1845: Honorary membership of the Vereins für vaterländische Naturkunde in Württemberg[1] The genus Hohenbergia of the family Bromeliaceae has been named after Friedrich Paul Wilhelm Duke of Württemberg - who travelled the Americas under the alias of Baron von Hohenberg by Julius Hermann Schultes.