Founding of the Dynasty
Aegon the Conqueror landed in Westeros and unified the Seven Kingdoms through war and dragons. His reign established the Iron Throne and the Targaryen dynasty as the ruling family of the realm.
Expansion and Decline
Later kings expanded the realm through conquest and marriage, yet internal conflicts and madness weakened the line. The Dance of the Dragons and the reign of Aerys II marked turning points toward instability.
End of the Dynasty
The dynasty ended with Robert's Rebellion, which overthrew the last Targaryen rulers and replaced them with the Baratheons. Westeros.org provides a detailed record of the Targaryen kings and their reigns.
