After studying law at the universities of Leipzig and GÃ¶ttingen, he entered the service of the prince of Nassau-Weilburg, whom in 1791 he represented at the imperial diet.
Of Hans Christoph von Gagern's sons three attained considerable eminence: Friedrich Balduin, Freiherr von Gagern (1794-1848), the eldest, was born at Weilburg on the 24th of October 1794.
Maximilian, Freiherr von Gagern (1810-1889), the youngest son, was born at Weilburg on the 26th of March 1810.
The Treveran territories on the right bank of the Rhine were secularized and given to Nassau-Weilburg in 1803, and in 1814 nearly the whole of the former electoral dominions were given to Prussia.
WEILBURG, a town of Germany, in the Prussian province of Hesse-Nassau, picturesquely situated on the Lahn, just above the confluence of the Weil, 50 m.
The old town, built on and around a rocky hill almost encircled by the river, contains a castle of the 16th century, formerly the residence of the dukes of Nassau-Weilburg, and later of the grand-dukes of Luxemburg.
Weilburg was in the 11th century the property of the bishops of Worms, from whom it passed to the house of Nassau.
From 1355 to 1816 it was the residence of the princes of Nassau-Weilburg, a branch of this house.
See C. C. Spielmann, Fiihrer durch Weilburg and Umgebung (Weilburg, 1894); and Geschichte der Stadt and Herrschaft Weilburg (Weilburg, 1896).