. . . "John Adolf of Nassau-Usingen, Field Marshal of the Kingdom of Prussia" . . . . "1793-12-10" . . . . . . . "1793" . . . "John Adolph of Nassau-Usingen" . . . . . . "1740" . "John Adolph" . "1740-07-17" . . . . . "John Adolph of Nassau-Usingen" . . . . . . . .