Home planet of House Ginaz that was one-time allies of Duke Leto Atreides and who were defeated in the War of Assassins with Grumman. House Moritani of Grumman attacked Ginaz after some of their students were sent home in disgrace from the Swordmaster School- Duncan Idaho is noted to be a Swordmaster of the Ginaz which leads to his body later being sold to the Tleilaxu? as a master swordsman, an adept of the Ginaz School.

Ginaz is oceanic with multiple, small tropical archipelagos that constitute its only surface land on which all the major population centers are situated. During the Butlerian Jihad, Ginaz mercenaries were renowned for their skill against Omnius.

On the net: Dune Wikia,