House Costayne

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House Costayne of Three Towers
House Costayne.svg
Coat of arms Quartered: a silver chalice on black, a black rose on yellow
(Quarterly, first and fourth sable, a chalice argent, second and third or, a rose of the first)
Seat Three Towers
Head Lord Tommen Costayne[1]
Region Reach
Title Lord of the Three Towers[1]
Overlord House Hightower[1]

House Costayne of Three Towers is a noble house from Three Towers in the Reach, sworn to the Hightowers.[1] Their castle is located on the southern coast of the Whispering Sound.[2]

The Costaynes blazon their shield with quartered: a silver chalice on black, a black rose on yellow.[3] Their words do not appear in the text.


Lady Elinor Costayne, the wife of Ser Theo Bolling, was forced to marry King Maegor I Targaryen after Theo's death.[4]

Lord Owen Costayne of Three Towers declared for Princess Rhaenyra Targaryen during the Dance of the Dragons, going against his Hightower overlords. He was mortally wounded by Ser Jon Roxton's Valyrian steel black blade, Orphan-Maker, during the Battle on the Honeywine.[5]

Along with Lords Beesbury and Redwyne, Lord Costayne accompanied the High Septon to King's Landing for the coronation and wedding of King Aegon III Targaryen.[6] A Costayne girl was among the names suggested by Samantha Tarly as possible brides for the king.[7] Ser Leo Costayne invaded the Iron Islands after the death of Lord Dalton Greyjoy, but was slain at Great Wyk.[8]

Lord Costayne fought for the Blackfyres during the First Blackfyre Rebellion. The Costayne force that participated in the Battle of the Redgrass Field fought on the left of Daemon Blackfyre's host. His son and successor was present at Whitewalls during the Second Blackfyre Rebellion.[9] Ser Tommen Costayne participated in the tourney at Ashford Meadow in 209 AC.[10] The son of the Blackfyre-supporting Lord Costayne participated in Lord Ambrose Butterwell's wedding festivities. This Lord Costayne was married to the daughter of Lord Ambrose by his first wife. Lord Costayne was defeated at the Whitewalls tourney by Ser Glendon Flowers. After the Second Blackfyre Rebellion was put down, a man in service to Lord Vyrwel claimed to have been one of Brynden Rivers's spies. He was promptly killed by a man in service to Lord Costayne.[9]

Long Tom Costayne served in the Kingsguard for sixty years.[11]

Recent Events

A Storm of Swords

Aemon Costayne is among the seven singers selected to sing at Joffrey I Baratheon's royal wedding.[12]

A Feast for Crows

Samwell Tarly spots Three Towers as the Cinnamon Wind sails into Whispering Sound.[2]

House Costayne at the end of the third century

The known Costaynes during the timespan of the events described in A Song of Ice and Fire are:

With unspecified familiar relationship with the lord of the house there is also:

Historical Members

Behind the Scenes

House Costayne is a reference by George R. R. Martin to the author Thomas B. Costain. The family's arms reference two of Costain's novels, The Black Rose and The Silver Chalice.


  1. 1.0 1.1 1.2 1.3 A Feast for Crows, Appendix.
  2. 2.0 2.1 A Feast for Crows, Chapter 45, Samwell V.
  3. The Citadel. Heraldry: Houses in the Reach
  4. 4.0 4.1 4.2 Fire & Blood, The Sons of the Dragon.
  5. 5.0 5.1 Fire & Blood, The Dying of the Dragons - The Red Dragon and the Gold.
  6. 6.0 6.1 Fire & Blood, Under the Regents - The Hooded Hand.
  7. Fire & Blood, Under the Regents - War and Peace and Cattle Shows.
  8. Fire & Blood, The Lysene Spring and the End of Regency.
  9. 9.0 9.1 9.2 9.3 The Mystery Knight.
  10. 10.0 10.1 The Hedge Knight, Graphic Novel.
  11. 11.0 11.1 A Feast for Crows, Chapter 16, Jaime II.
  12. A Storm of Swords, Chapter 32, Tyrion IV.
  13. The World of Ice & Fire, The Targaryen Kings: Maegor I.
  14. The World of Ice & Fire, The Iron Islands: The Red Kraken.