Reynolds, 47, announced the name while speaking at the Deadpool & Wolverine premiere at Lincoln Center in New York City.
“I want to start by saying thank you to my wife, Blake, who is here,” he shared from the stage. “I want to thank my kids James, Inez, Betty, Olin, who are here. I hope that, if I’m lucky, this moment will be the most traumatic thing — that is, the contents of this movie — that happens in your wondrous life.”
He added: “I love that my entire family is here.”
Reynolds and Lively, 36 — who also share daughters James, 9, Inez, 7, and Betty, 4 — seemingly confirmed the birth of baby No. 4 in February 2023, five months after Us Weekly confirmed that Lively was pregnant. At the time, the Gossip Girl alum appeared without a baby bump in a carousel of images she shared via Instagram.
“Puppy Bowl Sunday 2023 been busy,” Lively captioned the photos of her family’s Super Bowl party.
Two months later, Lively stepped out for her first post-pregnancy red carpet while attending Barnard College’s Annual Gala in New York City. However, while fans speculated she and her spouse would make an appearance at the 2023 Met Gala in May, the A Simple Favor star revealed she was skipping the Metropolitan Museum of Art’s event to stay home with her newborn.