Following his death, his three sons jointly ruled the Duchy.

The senior line of the dynasty ruled the much smaller Duchy of Brunswick-Wolfenbüttel.

In difficult times, she ruled the Duchy from Meisenheim with great prudence.

Philip would rule the Duchy until his death.

After his father's death in 1664, his mother initially ruled the Duchy of Oels as regent for her four sons.

A good example is the extinct family of Pac that ruled the Duchy of Lithuania in the 17th century.

The House ruled the Duchy of Burgundy from 1032-1361.

They ruled the Duchy of Racha from c. 1488 to 1768.

Friedrich ruled the entire Duchy from 1616 when his brother emigrated due to conflicts with the nobility.

Since the death of his brother, Henry IX ruled the Duchy alone.