Noun
The territory or dominions of a duke; a dukedom.
Source: Webster's dictionaryI will take the Duchy of Courland, I, the victor by the strength of my sword, but not from the hand of the assembly. Wilhelm II of Germany
At every period in her history, in different circumstances, the Grand Duchy has had to reinvent herself. Henri of Luxembourg
1803 to 1933 Heidelberg fell to the Grand Duchy of Baden in 1803. Source: Internet
Abensberg then lost its independence and became a part of the Duchy of Bavaria, and from then on was administered by a ducal official, the so-called caretaker. Source: Internet
Adams et al.; Hutchinson, p. 244, 348 He was appointed Chancellor of the Order of the Garter from 22 April 1578 until succeeded by Sir Amias Paulet in June 1587, when he became Chancellor of the Duchy of Lancaster in addition to principal secretary. Source: Internet
Additionally, he made the twelve-year-old Rudolf Duke of Swabia, a merely titular dignity, as the duchy had been without an actual ruler since Conradin 's execution. Source: Internet