After the death of Peisistratus, the tyrant's son Hippias ruled from 527 to 510 with the assistance if not co-rule of his brother Hipparchus, who was assassinated in 514.
Roman Septimius Severus 2) Nefertiti, queen of Egypt, co-ruled her country between 1379 and 1358 BC.
I think it is going to be more significant than anyone imagines, and I believe that you are also then going to be co-ruled by a thug-ocracy of this part of the world.
Later that year in Jylland, less than a year into their co-rule, Magnus died without an heir.
The co-rule ended abruptly the next year as Magnus died, and Harald thus became the sole ruler of Norway.
During their short co-rule, Harald and Magnus had separate courts and kept to themselves, and their only recorded meetings nearly ended in physical clashes.
The co-rule between Eystein, Sigurd and Olaf entailed a shared kingship, and the kingdom itself was not divided into fixed borders.
Their successful collaboration is celebrated in Lithuanian historiography, and gave rise to a much debated theory that a tradition of co-rule or diarchy in Lithuania was customary and arose as early as 1285.
For a brief period in 1230/1231, Óláfr co-ruled the kingdom with Guðrøðr Rögnvaldsson.
In 1231, Óláfr co-ruled a split kingdom with Rögnvaldr Guðrøðarson's son aforesaid son, Guðrøðr Rögnvaldsson.
Due to the decline of Moldavia during the civil war, the region reverted to Wallachia, with Chilia being co-ruled by Hungary and Wallachia.
