Celebrity Lena Headey Files for Divorce The actress who plays Cersei Lannister has been married to musician Peter Loughran for five years By People Staff Published on July 25, 2012 08:00 PM Share Tweet Pin Email Photo: Filmmagic Lena Headey is single again. The actress, who plays the villainous queen Cersei Lannister in HBO’s Game of Thrones, filed for divorce from musician Peter Loughran on July 20, according to court documents filed in L.A. Superior County Court. Headey, 38, cites irreconcilable differences as the reason for the split. According to papers, Headey and Loughran, who wed in May 2007, have been separated since 2011. She is is requesting joint legal and physical custody of their 2-year-old son Wylie.