Morena Baccarin and "Gotham" co-star Ben McKenzie welcomed their first kid together ... daughter Frances Laiz Setta Schenkkan.
Frances was born on March 2. The couple's reps confirmed the baby girl and mom were "happy and healthy."
As for the name ... it appears to be a collaborative effort. Frances is McKenzie's mom's middle name and Setta is Baccarin's mother's maiden name. Schenkkan is Ben's real last name.
Baccarin's pregnancy has been a little complicated -- she's been hashing out a nasty divorce to soon-to-be ex Austin Chick, with whom she already has a 2-year-old son, Julian.
USA Today first reported the birth. This is McKenzie's first kid.