Glenn Howerton and his wife, Jill Latiano, welcomed their first child, a little boy, on September 12th. The couple named the baby Miles Robert.

The 35-year-old actor revealed the big news during his appearance on “Conan” Wednesday night. He also admitted that they waited until the last minute to pick out the name.

“My wife and I thought it would be a good idea to wait to see the baby first before we actually decided what his name would be … get a sense of the guy,” he said. ““Then we saw him and he looked like a tiny little baby alien grandpa creature and I was like, ‘I’m not getting any information from this – at all.'” He jokingly adding that they even considered naming the baby Conan.

Howerton is best known for his role as Dennis on the FX comedy “Always Sunny in Philadelphia.” His wife, who guest-starred on the show as his character’s love interest, is a former dancer for the New York  Knicks.

The couple was married in 2009.