Jimmy Fallon revealed that he and his wife struggled for five years to start a family before they decided to have their daughter with a surrogate.
"We've tried a bunch of things," the "Late Night" host told Savannah Guthrie on the "Today" show. "Anyone who's tried will know it's just awful."
Fallon and wife Nancy Juvonen welcomed their first baby on July 23, a day after the royal baby was born.
Winnie's birth was a surprise to many, he said. Fallon told the show last Friday that his past disappointments led him and his wife to decide not to tell anyone they were expecting a child.
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Fallon encouraged couples facing difficulties with pregnancy not to lose hope, though, and to try every possible avenue to start a family.
Fallon also revealed how his daughter got the name "Winnie." He told the "Today" show that Winnie was short for Lake Winnipesaukee, the location of a New Hampshire lake house where Fallon and his wife got engaged and joked that "Winnie" from the "The Wonder Years" was an extra inspiration.
"And also, she's a 'win' for us," he said. "I'm just so happy right, I'm freaking out."
This year has been a productive year for Fallon, who not only is now a proud father but his NBC show was nominated for an Emmy. NBC has also said Fallon will take over "The Tonight Show" in the spring of 2014.
The "Today" show will air part two of Guthrie's interview with Fallon on Wednesday.