From A Wiki of Ice and Fire
The Bloody Isle is a isle off the coast of Oldtown in the Reach.
A Feast for Crows
When Samwell Tarly is at the Weeping Dock at Oldtown, he sees two acolytes helping an old man into a boat for the Bloody Isle.
- ↑ 1.0 1.1 A Feast for Crows, Chapter 45, Samwell V.