Shon

Shon, King of Armis
Shon is the 12th king of Armis, father of Axel and grandfather of Erin and Lanoire. He is your run-of-the-mill Fire Emblem king, ruling fairly and justly, and with a strong military force. However, at the beginning of the game, he is captured in a military coup by Sheridan, his retainer, a Belial-controlled warrior who steals the throne from the king, with the assistance of an army of cultists and his Triad. Shon is imprisoned and forced to watch his country crumble.

However, Axel saves him after slaying Calivigne, and Shon joins him to help defeat Sheridan, wielding Excalibur, the Ashen Blade of Kings, as well as Caelia, the powerful light tome his fallen queen wielded. He then fights Sheridan, wins, and rules for a few more years (a bit under half the time between Generation 1and Generation 2). However, complications with his wounds, illness, and age all end up taking him to a slightly early grave; however, he lives to see his only son get married, and lives to see his grandchildren born.