An island is any piece of sub-continental land that is surrounded by water. Very small islands such as emergent land features on atolls can be called islets, skerries, cays or keys. An island in a river or an island in a lake may be called a holm. A grouping of geographically or geologically related islands is called an archipelago.
Jack Arnold directed Gilligan's Island.
I do not see any mention of a wife nor does he wear a ring.