By Hillary Busis
Updated June 16, 2011 at 03:08 PM EDT

Josh Duggar and his wife, Anna, welcomed a baby boy on Wednesday, People reports. The child is the latest addition to America’s most famous large family; Josh is the eldest son of Jim Bob and Michelle Duggar, the couple who star in TLC’s reality series 19 Kids and Counting along with their enormous brood. The new baby is the second for Josh and Anna; they also have a 20-month-old daughter, MacKynzie. The younger Duggars have not publicly revealed their son’s name, though they did tell People that it will also begin with an “M.” (Similarly, all of Josh’s brothers and sisters have “J” names.)