In 133 AC, when Lord Alyn Velaryon was dispatched to the westerlands to battle Lord Dalton Greyjoy, twenty Hightower war galleys commanded by Ser Leo joined the Velaryon fleet. However, Dalton was slain before the fleet arrived and the his ships returned to the Iron Islands. With their fleet destroyed, House Lannister was reluctant to see the Velaryon fleet depart in fear of the ironborn returning. Until the Lannisters and Farmans could rebuild their ships, Alyn agreed to allow a third of his own fleet remain in the westerlands, under the command of Leo.
While Alyn had refused to attack the Iron Islands, Ser Leo proved more amenable to Lady Johanna Westerling, the Lady of Casterly Rock. Swayed perhaps by Johanna's promise to marry him if he delivered the Iron Islands to her young son's rule, Leo descended on the islands with his fleet in 134 AC. In the middle of a war of succession, Leo and his army took the ironborn unawares and put many to the sword, landing thousands of Lannister soldiers on Pyke, Great Wyk, and Harlaw. Ultimately, Leo was slain in battle amidst the stony hills of Great Wyk, cut down by Arthur Goodbrother. Leo's host was largely destroyed and three quarters of his fleet were seized or sunk, but a portion of his fleet returned to Lannisport with highborn captives aboard. Amongst the notable hostages was Rodrik Greyjoy, a salt son of Lord Dalton that Lady Lannister would geld and make her son's fool.
Game of Thrones is roughly based on the storylines of A Song of Ice and Fire, set in the fictional Seven Kingdoms of Westeros and the continent of Essos. The series chronicles the violent dynastic struggles among the realm's noble families for the Iron Throne, while other families fight for independence from it. It opens with additional threats in the icy North and Essos in the east. Dive deep in the big world of Westeros or Essos.With us, you will learn all the history and geography about all houses castles and much more.