In the books
In the A Song of Ice and Fire novels, nothing more is mentioned about the Merling King other than what is stated in the Histories & Lore video on "The Many-Faced God": the Merling King has a statue in the House of Black and White, along with statues of gods from all other known religions with dominion over death, and it is most commonly visited by sailors. It is unknown exactly how popular the cult is or where it is most popular.
|Major religions in Essos:||
· Great Stallion · Great Shepherd · Ghiscari religion ·
· Moonsingers · Lion of Night & Maiden-Made-of-Light
|Other cults in Essos:||
· Hooded Wayfarer · Moon-Pale Maiden · Merling King