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"If you touch my sister again I'll kill you..."
―Dyron to a beaten Marlen Rosby

Marlen Rosby is a recurring character in the third, fourth, fifth, and sixth seasons. Ser Marlen Rosby is a knight of House Rosby and the abusive husband of Elyse Blackgard.



Ser Marlen Rosby is a member of House Rosby, a vassal house of House Baratheon. He is a successful tourney knight and swordsman.

He takes great pride in his status as a knight, even though he routinely performs actions which break a knight's sworn duty to defend the weak and the innocent without hesitation or question.

Season 6

"You killed my husband! You waited until our father died so nobody could stop you and you killed him! You killed him! You blamed him for Dyr, you always did, everybody did. But you never thought about me! You never gave a damn about me! What am I going to do now?!"
Elyse Blackgard, after discovering her abusive husband's death

After Eddin Blackgard, the new Lord of Ebonheart, receives a letter from Maester Caledon, containing valuable and incriminating information about Marlen's involvement in the death of Dyron Blackgard, he confronts a visibly distressed Marlen about his dealings with House Greyjoy and the unknown treacherous vassal. He gives him false promises that he will be kept alive but in turn, exiled to the free city of Pentos. However, once Marlen is put on the ship that will take him to Essos, the crewmen abandon the vessel and Blackgard ships attack and sink the ship, killing Marlen in the process.