Black swan emblems and popular culture cluster in Australia: Upper Swan, Middle Swan, Swan Valley, Swan View, West Swan, Swan Estuary, Swan District, and the City (formerly Shire) of Swan. The Swan Land District is the major cadastral unit of the state, underlying much of the name cluster. There are at least twenty "Swan" street names in the Perth metropolitan area. There are no "White Swan" toponyms in the state, and the toponymist Reed lists only the Swan River as a "Swan" toponym in the state. The rarer form of "Cygnet" ("young swan") only occurs in three places, all along the Kimberley coast, where they commemorate
Emma Swan raised by ducks, before finding its birth family and recognizing its true nature, while her Dark One side is loosely based on Odile the Black Swan from the ballet "Swan Lake". It is revealed in the Season 6 episode "Tougher Than the Rest" that she chose the last name Swan when she was young after a friend mentioned that story. In early stages of the conception of the character, Emma's name was Anna, and she was supposed to have three children, but she ended up having just Henry. In the original script of the Pilot, she is described as "Late