Grand Ducal Guard was created in 1945.
Grand Ducal Institute was created in 1868.
Grand Ducal Gendarmerie - Luxembourg - was created in 1733.
Weimar Saxon-Grand Ducal Art School was created in 1860.
Grand Ducal Gendarmerie - Luxembourg - ended in 2002.
Ducal Georgianum was created in 1494.
Teatro Regio Ducal was created in 1717.
Lerma Ducal Palace was created in 1617.
Imperial Ducal Abbey of Kempten was created in 1213.
B. S. Arakcheev has written: 'Saint Peter and Paul Cathedral and the Grand Ducal Burial Chapel'
The first driver's license was actually issued to Karl Benz in 1888, the founder of Mercedes-Benz automobiles. Due to the noise and smell of his vehicles, he requested and received written permission to drive on public roads by the Grand Ducal authorities. (Grand Ducal was a part of the Grand Duchy of Baden, which is a historical state of Germany) Note: I compiled this information from Wikipedia, so the validity may not be 100% accurate.
Imperial Ducal Abbey of Kempten ended in 1802.
There are many websites that offer information on Crown Ducal china and dinnerware. Some of these websites that offer information are the official Crown Ducal website and Kovels.