surname attested from mid-12c. (William de Ysini), from Isigny in the Calvados region of Normandy. Disneyesque, in reference to the cartooning style of U.S. animator and producer Walt Disney (1901-1966), is attested by 1939.
imaginary earthly paradise, by 1938, from Shangri-La, name of Tibetan utopia in James Hilton's novel "Lost Horizon" (1933, film version 1937). In Tibetan, la means "mountain pass."