- "It's no joke! Steph and I are having a BABY! For Steph's privacy and for health reasons we wanted to keep this stuff off the internet until now, but we're finally ready to share the news with all of you! This channel is a huge part of my life, so it seemed wrong not to share this huge news with all of you who have been there to support me in so many ways over the years.
We're so excited to be welcoming our newest Little Theorist into the world THIS SUMMER!"
- —Description of The Most IMPORTANT Video I've Ever Made (NOT CLICKBAIT)
Oliver Julian "Ollie" Patrick is the son of MatPat and Stephanie. Near the end of the March 13, 2018 live stream, it was revealed that the baby was due to be born on July 4, 2018, however, he was born five days later.
Stephanie's pregnancy was revealed on March 12, 2018 around six months after BabyPat's conception. The Most IMPORTANT Video I've Ever Made (NOT CLICKBAIT).
On the 29th of April, Matthew and Stephanie asked the community which color they should paint the child's room.
On the 10th of July Matthew posted a picture on twitter stating the delivery went well.On the 13th of July, Matthew held a livestream and he stated that Oliver was 4 days old, and he shared his birthday with rapper Cardi B’s child, who was born on July 9th.