Celebrity Parents Will Ferrell and wife welcome second son By Staff Author Published on January 2, 2007 02:44 PM Share Tweet Pin Email Actor Will Ferrell, 39, and his wife Viveca, 37, have welcomed their second son. Mattias was born in the early morning hours of Saturday, December 30th, just after 2 am – missing his due date of Friday by just 2 hours! A middle name and birth stats were not released. Mattias joins big brother Magnus, 2 1/2. Source: People Thanks to CBB readers Michelle, Danielle, Amanda, Mary Beth, Lianne, Jen, Deanna, Leslie and Brittany.