Filarion was the son of Filvendor Floshin. He trained as a thief but had a good reputation. Many in 1370 believed him the master of the local thieves' guild. He disappeared from the town for many years in search of his missing father, resurfacing only around 1445 DR at Elorfindar Floshin's death hoping for an inheritance but the sole heir was Darfin Floshin. He lived training guards and militiamen.