This name derives from the Scottish place name “Islay”, from Old Celtic “*ili” meaning “swelling island” but probably pre-Celtic or Old Norse. Islay is the southernmost island of the Inner Hebrides of Scotland. Islay is the fifth-largest Scottish island and the seventh-largest island surrounding Great Britain, with a total area of almost 620 square kilometres (239 sq mi). Another interesting suggestion is from the Latin "sălum > *isula > (terra insula) insula", meaning "island, deep sea, (poetic) rough sea, (of the river) wave, current." Probably the Latin word "sălum" is derived from the Greek "sálos (σάλοσ)", meaning "the movement of the sea." The name was recorded in England after the famous Norman conquest of 1066.