The island was named in honour of Saint David, the patron saint of Wales, as the similarly sized St. George's Island, to the north, had been named for the patron saint of England. The two islands are separated by two bodies of water - Ferry Reach in the south-west and St. George's Harbor in the north-east. St. David's is separated from the Bermudian mainland by the waters of Castle Harbor in the south, but is joined to it by road via The Causeway
