 Some names were created by the authors of literary works and spread in public use through them.Such names followed the rules of the Lithuanian language; therefore it is sometimes difficult to tell whether the name is fictitious and had never existed before.Notably, "Gražina", "Živilė" by Adam Mickiewicz, "Daiva" by Vydūnas, "Šarūnas" by Vincas Krėvė and others.