'The Mountain' has a son; 'Game of Thrones' Hafthor Julius Bj?rnsson welcomes 'healthy, strong' baby

"The Mountain" from "Game of Thrones" is father to a "strong" newborn son.

Hafthor Julius Bj?rnsson, the 6-foot-9, 420-pound Icelandic strongman who played Sir Gregor Clegane, "The Mountain," on HBO's "Game of Thrones," announced Sunday that his wife Kelsey Henson had given birth to a boy.

Bj?rnsson was profoundly moved by the event, giving a detailed play-by-play for the Saturday birth on Instagram.

"After an extremely hard 2 hours and 19 mins of pushing our healthy, strong, beautiful boy arrived," he wrote, saying the baby weighed over 7 pounds.

Henson wrote on her Instagram account, "Our beautiful baby boy made his grand entrance into the world at 11:19 AM on September 26th 2020 after a short and intense six hours."

"The birth was the most powerful, life-changing, empowering thing I’ve ever done in my entire life. We are all doing well and settling in at home as three!"

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Bj?rnsson is keeping the child's name under wraps for now.

"We have decided on a name and cannot wait to share it with you all soon," he wrote.

He has a daughter, Theresa Líf, with his ex-girlfriend Thelma Bj?rk Steimann.

"To finish the most beautiful, awe-inspiring labour was the most wonderful phone call to my daughter to introduce her to her new little brother," Bj?rnsson wrote.

In May, Bj?rnsson showed his brawn with a world deadlift record, raising 501 kilograms (1,104.52 pounds) off the ground

This article originally appeared on USA TODAY: 'Games of Thrones' Mountain: Hafthor Julius Bj?rnsson welcomes son