Oliver (#12), Easton (#66), Winston (#473), Langston (#653), and Santana (#851) are the most popular infant names, whereas Eastin (TOP 10%) and Callin (57%) are popular surnames. The following is a list of rock names for girls. It is based on how often they appear in the Social Security Administration's annual list of baby names. Emmett (#12), Lillith (#115), Morgana (#158), Selene (#243), and Serenity (#749) are the most popular female infant names. Emmett has been listed as one of the most popular boys' names since 2000 while Serenity has been listed as one of the most popular girls' names since 2002. Emmett was originally used as an English name before it became popular among whites in the United States during the 19th century. It may have derived from the name of an Irish rebel leader or it may be based on the Biblical character Eneas who was said to be the father of many nations. Serenity comes from a Latin word meaning "peace" or "calmness". This name was very popular among astronauts who wanted names that would help them deal with problems that might arise during space flights.