Keri Russell, Matthew Rhys welcome first child together
"The Americans" co-stars became parents earlier this month, reported People magazine.
This is the first child for Rhys, 41, and the third for Russell, 40, who is already mom to daughter Willa, 4, and son River, 8, with ex-husband Shane Deary.
In April 2014, it was confirmed that the duo, who play Russian spies posing as a suburban American couple on the hit FX show, were dating.