Arisinia

HRH Queen Arienné is the reigning Queen of the Second Kingdom of Varsais, having been invited to take the throne in early 263. She is the youngest daughter of Daelin I and Queen Éimí De Róiste, who died of eclampsia shortly after her birth.
The Varisian Assembly decided to elect a foreigner as monarch for the Second Kingdom to prevent a civil war between the Duke of Maereynde and the Duke of Pyremonde, and Hybretia won the ballot. Arisinia was then nominated as the only option from the House of Caestor not to cause a personal union. Before the 15 year old Queen could arrive in Varsais, the Duke of Pyremonde rebelled, and she was betrothed to the Crown Prince of Maereynde, who also served as regent until she came of age.
Arisinia arrived in Varsais fully fluent in Varisian, and soon took personal directive of the troops when a Republican revolution broke out following draft riots in Varsais proper. She reached a secret agreement with the losing rebels to defeat the Duke of Pyremonde, who would've seen a return to absolute monarchism. Following the civil war, Arisinia entrenched several new rules and gave much of her power to l'Assemblie Nationale, earning her popularity in her later reign as "La Mère du Vote". 
Arisinia died in her sleep aged 68 in 315KOR, and was succeeded by Bedoujin I, King of Varsais. She was the only Monarch of Varsais of the House of Caestor. She was also survived by her three daughters, Amelie, Varsine, and Annette.