Blacktyde is one of the islands that form the Iron Islands. The major noble house of the island is House Blacktyde, who rule from their castle of the same name.
The northernmost of the Iron Islands, Blacktyde is located north of Orkmont and northwest of Harlaw. Blacktyde and Saltcliffe are less notable than most of the other islands in the archipelago.
After the death of Dalton Greyjoy, Lord of the Iron Islands, the lords of Blacktyde and Harlaw supported Rodrik Greyjoy against Toron Greyjoy in a struggle for power in the Iron Islands.
After Tristifer Botley was found with Asha Greyjoy in Pyke, he was sent away to Blacktyde to be a ward of Baelor Blacktyde, Lord of Blacktyde.
Members of House Blacktyde travel from Blacktyde to Pyke when Balon Greyjoy, Lord of the Iron Islands, summons his bannermen.
Baelor Blacktyde, Lord of Blacktyde, travels from his isle to visit Rodrik Harlaw, Lord of Harlaw, at the Ten Towers. Euron Greyjoy has Baelor executed after the kingsmoot on Old Wyk.