While it's not spelled the same, Cersei Lannister, a character in the 'A Song of Ice and Fire' novel series by George R. R. Martin, adapted to the HBO television series 'Game of Thrones' bears this name. The pronunciation is the same as Circe, but the name itself is an alternate spelling.
Circe is a short story by Julio Cortázar. The scene that I remember the most is when Mario, the boyfriend of Delia- the lead character- found a cockroach in a candy that she made and gave to him. I like the name by the way... it sounds mysterious, strong and feminine to me.
I'm usually loath to reference bearers of different spellings, but the cruel and insane queen of the "A Song of Ice and Fire" series, written by George R. R. Martin, bears the name Cersei. Just in case anyone needed more encouragement NOT to name their child this. :P