King Carl of Cimera was born Carl William Timon Pádraig Hervé, 15 February 286 in Sligomeagh, Merité to Princess Marie-Brangien of Cimera and Cornelius, youngest son of the Duke of Aurora (Cruisana).
Prior to his abdication in May 312, his succession of primary titles and roles was as follows:
- Prince Carl of Sligomeagh: February 286 – November 298 AP
- Hereditary Grand Duke Carl III of Cimera: November 290 – November 298 AP
- Grand Duke Carl III of Cimera: November 298 – November 302 AP
- Crown Prince Carl of Cimera: November 302 – February 304 AP
- King Carl of Cimera: February 304 – May 312
As only child of Marie-Brangien the then Hereditary Grand Duchess of Cimera, Carl was styled Prince of Sligomeagh at birth as is customary for all grandchildren of the reigning Grand Duke or Grand Duchess of Cimera. In the wake of his parents' divorce, the royal family, under pressure from the Church of Merité, decreed that should the Hereditary Grand Duchess remarry, she would forfeit her right to succeed her father, Grand Duke Carl II. When she did marry in November 290, Carl was created Hereditary Grand Duke.
In November of 298, a contingent of the Meritéan royal family including King Timothy II and Grand Duke Carl II disappeared while on a cruise at sea. In light of the assassination of King Timothy I, it was widely suspected to be a case of politically-motivated mass murder. This triggered the implosion of the Meritéan Commonwealth, foreign intervention, and a series of conflicts throughout Meritéan territory.
After Grand Duke Carl II was officially declared dead, Carl III was crowned Grand Duke, though he was assisted in his duties by a regency council dominated by Cruisanans until he reached 18 in February of 304.
The constitutional reforms that took place after the armed conflicts of late 302 elevated Carl to Crown Prince with a provision that, on reaching the age of majority, he would accede to the kingship and the Cruisian Principality of Cimera would simultaneously become the Kingdom of Cimera.
After a decade as king, eight years in his own right without a regency council, Carl, in consultation with the Labour government of Prime Minister Annelise Noissen, abolished the monarchy and abdicated. Since May 312, he has gone by Carl William Cimera, rejecting all titles and assuming the name of his former royal house as his surname.