Gillian Anderson (AP File)

It's possible that Gillian Anderson referenced "The Odd Couple" when it comes to baby names.

"The X-Files" star and her boyfriend Mark Griffiths welcomed a baby boy, Felix, into their home on Wednesday, Oct. 15, reports People.

Felix Griffiths weighed 6 lbs., 15 oz. and was born in London.

Anderson, 40, has another son with Griffiths, 1-year-old Oscar.

She also has a 13-year-old daughter, Piper Maru, from her first marriage to "X-Files" series assistant art director Clyde Kotz, whom she later divorced. Following that was a brief, 16-month marriage to documentary filmmaker Julian Ozanne. She then started dating Griffiths, a businessman.

Anderson won an Emmy and Golden Globe for playing "X-Files" agent Dana Scully. She reprised her role in the second big-screen offering " X-Files: I Want to Believe."

Her other credits include the TV miniseries adaptation of Charles Dickens' "Bleak House" and on the big screen, "The Last King of Scotland" and "How to Lose Friends & Alienate People."