Owen, joint ruler with his brother, died 1197.
He joined Hasan's order as a novice, and had him proclaimed as joint ruler.
In fact, during the reigns of the final three joint rulers (1760-1837), there was only one short visit, by George IV in 1821.
For a while Irene and young Constantine were joint rulers of the Empire.
When Liuvigild established his son Hermenegild as joint ruler, a civil war ensued.
The following year, William, along with his wife Mary, became joint ruler of England and Scotland.
The throne was then offered, not to James's young son, but to his daughter Mary and her husband William of Orange, as joint rulers.
Eric had already been made joint ruler of Norway.
He served as joint (military) ruler of the Holkar state.
In the meantime Henry, Eleanor and Richard acted as joint rulers.