Twins Henry and Walker Halls were born in 2008. Henry and Walker are Matt and Simon's youngest sons and were also born via surrogate. Matt and Simon's younger children tend to be more low-key because of their age, but Henry did go as Matt's date to the 2019 Tony Awards. And though all of Matt's sons are supportive of his work, he joked to ET that he keeps playing roles that aren't quite appropriate for them to watch. "I just have to make sure that I start working on more things that they can see!" he told ET in 2018. "'Cause they're like, 'You do this, but then we can't watch it.' I'm like, 'When you're older maybe!'"