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Leo Costayne

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House Costayne.PNG
Leo Costayne
House Costayne.PNG
Title Ser
Lord Admiral of the Reach
Allegiance House Costayne
Culture Reachmen
Died In 134 AC, at the Iron Islands
Book(s) The World of Ice & Fire (mentioned)

Ser Leo Costayne was a knight of House Costayne during the reign of Aegon III Targaryen.[1]


In 134 AC, Lady Johanna Westerling, Lady of Casterly Rock, hired Leo Costayne and his fleet to take revenge on Lord Dalton Greyjoy, the Red Kraken, for burning the Lannister fleet and sacking Lannisport. Costayne and his army took the ironborn unawares and thousands were put to the sword. Ultimately Leo was slain in battle and his host largely destroyed, but a portion of his fleet returned to Lannisport with highborn captives aboard.[1]


  1. 1.0 1.1 The World of Ice & Fire, The Iron Islands: The Red Kraken.