Korodullin I (4859-Unknown) was the first true King of Arendia, and the namesake of every king who has followed since.
The hotheaded son of Duke Aldorigen of Mimbre, he grew up in the last stages of the Arendish Civil War, when Mimbre and Asturia were locked in a stalemate; the Asturians, long bereft of their cities, had no stable base from which to regain the territory that the Mimbrates had taken from them, but the Mimbrates could not spare the kind of manpower necessary to wipe out the Asturians once and for all.
When Torak and his army crossed Ulgoland in 4875 and reached the Arendish plain, setting their sights on Vo Mimbre, the sorceress Polgara came and forced Aldorigen to reach out to his hated nemesis, Duke Eldallan of Asturia, extracting from both men a promise that they would put off hostilities until after the Angaraks had been routed; they agreed only on the condition that afterwards, they'd be allowed to settle their differences once and for all with a duel. After the Battle of Vo Mimbre ended with the apparent death of Torak, Aldorigen and Eldallan finally had their duel; neither man survived.
Having ascended to the throne at the age of sixteen, Korodullin quickly found his power circumscribed when the Accords of Vo Mimbre demanded that he end the long feud between Mimbre and Asturia by marrying Mayaserana I, Eldallan's daughter. Neither he nor Mayaserana was thrilled at this prospect, but Polgara was quite insistent, and the two adolescents were locked away in a single room. When they emerged, they very eagerly married.