Grand Ducal Institute was created in 1868.
Grand Ducal Guard was created in 1945.
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.
Grand River Collegiate Institute was created in 1966.
Teatro Regio Ducal was created in 1717.
Lerma Ducal Palace was created in 1617.
Imperial Ducal Abbey of Kempten was created in 1213.
The motto of Grand River Collegiate Institute is 'Potentia Per Scientiam'.
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.