Home Health Parents News Now Actor James Marsden Welcomes Son Actor James Marsden Welcomes Son By Holly Lebowitz Rossi December 20, 2012 Advertisement Save Pin FB More Tweet Email Send Text Message Print shutterstock_102906491 30091 Brazilian model Rose Costa delivered a son, William Luca Costa-Marsden, on Friday, Dec. 14 in Los Angeles, PEOPLE has learned. The 30 Rock star, who briefly dated Costa after his split from wife Lisa Linde in 2011, picked the name and is being very supportive, a source tells PEOPLE. Marsden, 39, is already dad to daughter Mary James, 7, and son Jack Holden, 11, with Linde. Image: James Marsden, via s_bukley / Shutterstock.com By Holly Lebowitz Rossi Save Pin FB More Tweet Email Send Text Message Print Comments Add a Comment Be the first to comment! No comments yet. Advertisement Close this dialog window Add a comment Actor James Marsden Welcomes Son Add your comment... Cancel Submit Success! Thanks for adding your feedback.