Deborah O'Neill (19), a retail worker, and Craig Macey-Lillie (23), a joiner from Dundonald, told the Belfast Telegraph that their baby son was due to arrive on July 6.
Instead, the beautiful little boy made his arrival into this world on June 20 at 7.45am, weighing 6lb 15oz.
“He looks like his dad. He is the double of Craig,” Deborah said.
“I absolutely love him so much.
“He is so tiny. I was overwhelmed when he was handed to me.
“The staff here have all been really lovely.”
Leo's middle name is Alexander, after Deborah's Dad.
He is the first grandchild for Deborah's parents and the third for Craig's.
Craig said: “I am over the moon. I couldn't be happier.”
The new parents said they would like to thank their friends and family for all their love and kind wishes — in particular their parents for supporting them.
“We couldn't be in a better mood,” Craig added.
“Leo is just amazing.”
COMMENT RULES: Comments that are judged to be defamatory, abusive or in bad taste are not acceptable and contributors who consistently fall below certain criteria will be permanently blacklisted. The moderator will not enter into debate with individual contributors and the moderator’s decision is final. It is Belfast Telegraph policy to close comments on court cases, tribunals and active legal investigations. We may also close comments on articles which are being targeted for abuse. Problems with commenting? email@example.com