Ryan updated his public Facebook profile picture on September 13, sharing a snap alongside Emily and their newborn baby in hospital.
While Ryan did not add any further details to the post, his comments were flooded by friends and family congratulating the pair on the birth of their first child.
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"He is so beautiful," one friend wrote.
Another friend commented to say "What a gorgeous photo of you all. Hope everything is going well and Em and Sampson are both going okay."
Emily and Ryan seem to be settling into parenthood well, posting a new photo on Instagram on September 21.
"The last 10 days have have been the best of my life to date, Sampson Ryan Seebohm has changed our lives and we bloody love him he’s perfect," Ryan penned.
It's been a whirlwind year for the couple, who met on the set of Channel 10's The Challenge in August 2022.
After falling hard and fast for each other, they then became secretly engaged in December 2022, but didn't publicly reveal they were getting married until March 2023.
RELATED || Ryan Gallagher and Emily Seebohm's relationship timeline
Speaking of their engagement, Emily told our sister publication Woman's Day that from the moment Ryan dropped a knee, it was a "big yes", also describing the memory as "really special."
"It definitely had a Ryan flair to it and it's something I'll cherish forever," she said as she reflected upon the happy day.
In July 2023, the couple shared their happy baby news with their fans and followers.
"We’ve had a little bump in the road," the soon-to-be husband and wife captioned a hilarious pregnancy reveal video depicting Ryan pretending he is the one carrying the child.
In an interview with the Courier Mail in the month leading up to her due date, Emily revealed her final trimester had been "awful."
"I just call myself Shrek these days," Emily joked.
In the same interview, she also hinted at the baby name she and Ryan had chosen.
"We didn't want something super crazy. We wanted something that was going to be unique."
Based on comments from their loved ones on Facebook, it appears the couple chose Sampson! So sweet.
Congratulations to Emily and Ryan.