Maiden Island is a real-world island in Japan, and while there are plenty of real-world locations that inspire One Piece locations, there is no known connection between Maiden Island and any island in the One Piece world.
It's possible you may be thinking of a different island, or you might be misremembering the name. If you can provide more details about the island or the events that took place there, I might be able to help you pinpoint the correct episode.