Lyonel's Rebellion was a short military conflict between houses Baratheon and Targaryen, during the reign of King Aegon V Targaryen.
Prelude[]
King Aegon V Targaryen arranged a betrothal of his heir, Prince Duncan Targaryen, to Lyonel Baratheon's daughter. However, the betrothal was broken when Duncan fell in love with and married the lowborn Jenny of Oldstones. Infuriated, and believing that House Targaryen had insulted House Baratheon's honor, he renounced his fealty to the Iron Throne, declared himself Storm King, and pronounced that the Stormlands had seceded from the Seven Kingdoms.
The rebellion[]
King Lyonel called his banners and took up arms against the Crown.
The conflict ended when King Lyonel was defeated by Ser Duncan the Tall of the Kingsguard, in a trial by combat. Lyonel surrendered and abdicated, and swore fealty to the Crown once more. The rebellion was a strategic victory for House Baratheon, however, as Lyonel got what he wanted; King Aegon betrothed his youngest daughter, Princess Rhaelle Targaryen, to Ormund Baratheon, Lyonel's son and heir.