Probably a creative form of Jericho, the biblical place name linked to the ancient city whose name may mean 'city of the moon.'
Gericho is probably a creative form of Jericho, the biblical city whose name may mean city of the moon. That places the name in a deeply historical and scriptural landscape. As a given name, Gericho feels unusual and vivid. It has the force of a place name but also the energy of invention, which makes it sound distinctive, a little dramatic, and strongly memorable.