In the series A Song of Ice and Fire, who is the founder of House Targaryen?
While the Targaryen family has years of historic ties to Valyria, it wasn't until Aegon's Conquest in the year 1 AC was the family established as a Westerosi House; Aegon the Conqueror is the house's founder.
Instruction: In the series A Song of Ice and Fire, who is the founder of House Targaryen?
Context: 
Response: While the Targaryen family has years of historic ties to Valyria, it wasn't until Aegon's Conquest in the year 1 AC was the family established as a Westerosi House; Aegon the Conqueror is the house's founder.