In late March, the new parents introduced their son on social media.
They welcomed their firstborn on March 17.
In February, Pak debuted her baby bump in a series of photo booth pics.
The newlyweds’ pregnancy news was announced in December, just days after they were wed in L.A. on December 3, 2016.
Yeun and the professional photographer said their vows in front of family and friends at L.A.’s historic Paramour Estate. Many of Yeun’s TWD costars, including Norman Reedus, Andrew Lincoln, Melissa McBride, Sarah Wayne Callies, Chandler Riggs, Emma Bell and Alanna Masterson, were in attendance.