Today's name: Saoirse
Pronunciation: SEER-sha, sometimes SAYR-sha, and more rarely SIR-sha
Potential nicknames: Sersh, Search, Sea, Isa, Shay, Shy
Origin: Modern Irish Gaelic, meaning "freedom." It has only been used since the last century, specifically the 1920s, and is strongly patriotic due to the fact that it is a word-name, equivalent of Liberty or Freedom in the U.S.
Popularity: Saoirse is very popular in Ireland, ranking in at #25 in 2009. There were 71 baby girls named Saoirse in 2010 in the U.S. In 2011 it rose to 101 births for girls.
Fun fact: (1) Saoirse is the name of an Irish Republican newspaper, and it is considered a patriotic, Nationalist/Catholic Nationalist, Republican baby name. It refers to Ireland being completely free, not a part of the UK. (2) Saoirse Ronan, famous Irish actress who played in the movie Atonement.