Jennifer Garner & Ben Affleck Arrival Date: Feb. 27, 2012 It's...a boy! His name is Samuel Garner Affleck. And baby makes...five.This is Jennifer Garner and Ben Affleck's third child together. The little guy joins big sisters Seraphina, 3, and Violet, 6. Birth Announcement: On Feb. 29, the proud papa took to his Facebook page to confirm the birth of his son with Garner, whom he has been married to since 2005.