Tad Hamilton? More like Dad Hamilton!
Reps for the actors did not immediately respond to PEOPLE’s requests for comment.
Want all the latest pregnancy and birth announcements, plus celebrity mom blogs? Click here to get those and more in the PEOPLE Babies newsletter.
Grace, 39, tied the knot with the True Detective actress, 28, in the Santa Barbara area of California in May 2016, a little over two years after they began dating and 16 months after they were engaged.
“I have no part in that!” he said. “That is all her. I know to show up, and I know which date.”
FROM PEN: TV Revivals We Want to See
“Imagine two of your great high school friends, who weren’t dating in high school but were buddies and you’re all in the same friend group and they grow up and they fall in love, get married, have a kid,” he said.
Aside from a two-episode stint on True Detective, the mom-to-be has appeared on True Blood and stars on the Crackle series StartUp. Grace — known also for his roles in Spider-Man 3, Win a Date with Tad Hamilton! and the recent Brad Pitt-led War Machine — has three more films lined up for a 2017 release.
E! was first to report the happy news.