Declan (1287-1342) Arthur (1342-1344) Morgana (1344-1386)
30,000,000 - 40,000,000 (estimate)
The Empire of Celtia, often called just Celtia, also called Celtic Empire, was a Celtic empire that controlled the entirety of the British isles and large parts of Francia, Belgia, Germania and Scandinavia. In the past historians have frequently used the terms Britannia and Empire of Britannia to refer to the empire, but this is now seen as deprecated and archaic, in addition to incorrect.
On November 12 2016, the Parliament of the autonomous region of Celtia declared their nation independent from the Norse Empire, restoring Celtic sovereignty over the island of Britannia. The newly established United Republic of Celtia has since been recognized by the majority of the world's nations.