Celebrity Parents Mercedes Mason and David Denman Welcome Son Caius Kane "We finally understand that love that no one can put into words," David Denman captioned an Instagram snap of his baby boy's foot By Jen Juneau Jen Juneau Jen Juneau is a News and Movies Staff Writer at PEOPLE. She started at the brand in 2016 and has more than 15 years' professional writing experience. People Editorial Guidelines Published on January 15, 2018 11:42AM EST Photo: David Denman/Instagram; Inset: David Livingston/Getty Their baby boy is here! Fear the Walking Dead star Mercedes Mason and The Office‘s David Denman have welcomed their first child, son Caius Kane, the spouses shared on Instagram over the weekend, revealing he was born on Wednesday, Jan. 10. “Caius Kane arrived 1/10/18 Happy and Healthy. Love this little man so much 💕,” Denman captioned a snap of Caius’ tiny foot, adding props to his wife: “@mercedesmason is doing great. She a champ! #unmedicatedbirth.” Want all the latest pregnancy and birth announcements, plus celebrity mom blogs? Click here to get those and more in the PEOPLE Babies newsletter. “We finally understand that love that no one can put into words,” continued the proud new dad, 44. “We’re all on cloud 9 🌤” Baby Boy on the Way for Fear the Walking Dead‘s Mercedes Mason and The Office‘s David Denman Wrote Mason next to a photograph of Caius’ hands and part of his face, “Welcome to the world Caius Kane, born 01/10/2018. Your daddy and I love you more than we could ever express.” For more coverage, follow our babies magazine on Flipboard. “I didn’t know what love was till I saw your face,” continued the new mom, 34, tacking on the hashtags, “#TheLoveOfMyLife” and “#MySon.” Denman, who is best known as Pam’s ex Roy on The Office, and Mason, who stars as Ofelia on Fear, tied the knot in 2014. Neilson Barnard/Getty Images for Entertainment Weekly FROM PEOPLETV: Michael Schur Shares His Favorite Moments from The Office The couple announced their little one on the way in August, with Mason posting photos and video of her and Denman at their gender-reveal party. Food, Water and … MacGyver? Fear the Walking Dead Stars Share Their Zombie Apocalypse Survival Must-Haves “HAPPY TO ANNOUNCE …. @david_denman and I are pregnant (or this is the BIGGEST burrito I’ve ever eaten!) and so excited!” Mason wrote on Instagram. “Feels so good to share our happy news,” she added. “Thank you to all of our friends who came by to wish us well.”