Swanwhite

Queen Swanwhite was a queen of Narnia, known for her great beauty. Swanwhite was, according to Jewel the Unicorn, so beautiful that if her face were reflected in a pool the image of her face remained for a year and a day. Jewel the Unicorn also says that Swanwhite ruled before Jadis. There is some confusion as to her actual rule, however, the timeline provided by C.S. Lewis states that she ruled around the year 1502. This has led to speculation that there are actually "two" Swanwhites, a beautiful one who reigned before Jadis and a namesake who reigned around 1502. Seeing as though no humans were ever born in narnia except for the descendants of frank and helen, and because only humans could rule narnia, it is assumed that swanwhite was in fact human, and thus also a member of Frank and Helens Royal Narnian family. This also means that Gale could've been her great great great great Grandfather, and that gives her the title Empress of the Lone Islands. It is also unknown when she died, but it's assumed it was right before jadis' arrival, or her death was a cause of jadis.