How many places in Papua New Guinea are called Brethren Isles?

There is one place named Brethren Isles in Papua New Guinea.

All places in the world called "Brethren Isles".

Location Brethren Isles:

• Central

Cities

Kusi (5)
Buri (4)
Mai (4)
Aure (4)
Moro (4)
Mari (4)
Aran (3)
Bonga (3)
Domara (3)
Kuru (3)
Omo (3)
Wau (3)
Koru (3)
Mala (3)
Po (3)
Toma (3)
Tauri (3)
Wagu (3)
Koki (3)
Nago (3)
Au (3)
Mondo (3)
Garu (3)
Doma (3)
Komo (3)
Wasu (3)
Baru (3)
Kama (3)
Maiva (3)
Tari (3)