Dee Devlin delivered little Conor Jack at Coombe Maternity Hospital last night.

Although McGregor has yet to share the news of their new arrival, grandad Tony McGregor says that everyone is doing well, and that Conor and Dee are over the moon with the arrival of their new family member.

Speaking to the Irish Mirror, Tony said “There’s great news for the McGregor’s and the Devlins.

“Baby Conor Jack McGregor was delivered last night at 8pm in the Coombe Hospital.

“He came in at 8 pounds 14 ounces. The whole family are absolutely delighted.

“We’ve experienced this recently with our eldest daughter and there’s no better feeling in the world than being a grandparent. The parents are absolutely over the moon and everyone is healthy.”

Little Conor Jack already has his own verified Instagram account, with 2,347 followers. The account follows only his mum and dad.

In an interview with GQ magazine in January, McGregor outlined that he will challenge anyone who pesters him when out in public with his baby boy, saying “I’m not trying to bring a kid into that.”

“If someone comes near me when I have my kid in my hands, like the way they come near me now, looking for pictures, someone’s gonna be badly hurt.”

He has also vowed train his son to be a more successful MMA fighter than himself.