House Philosir (pronounced fee-low-SEER) is a Tirionite noble family and dynasty, once the rulers of the nation when it was a kingdom. The family took control of the eastern Chaskan nation in Y6823* after leading an uprising against Sikarbaal Antares, the monarch at the time. They lost the throne in Y7222* under similar circumstances.
During their time in power, monarchs from House Philosir attracted reputations as military-minded expansionists. They remained popular as long as their expeditions were successful, especially those against the gnolls of the western Taizzan Expanse and the Khapesh-affiliated city-states to the south, but opinions both amongst the common people and the nobility of the kingdom soured after several generations of Philosir rule brought only losses of territory.
After the formation of the Tirione Republic in Y8960*, all known members of former ruling dynasties were exiled from the nation, House Philosir amongst them. Most of the Philosir left for Hellea, primarily joining the courts of Halakran dukes and counts. Though the family had never made serious efforts at regaining the throne after losing it in Y7222*, their exile brought new ambitions. Several small invasions were attempted by the Philosir with aims of regaining control of parts of the new republic, all ultimately failing as they retreated back to Hellea. In the modern day, house head Ersa Philosir continues to style herself as the rightful queen of Tirione, but even within the family it is acknowledged that this is mere posturing.