His wife posted the same snapshot and added, "Memphis Aldean Williams".
"We were the lucky ones I can't out into words the pain and heartache we feel for the ones who are no longer with us", she continued.
The country rocker - who was on stage at the Route 91 Harvest Festival in Las Vegas this October where gunman Stephen Paddock shot and killed 58 concertgoers and injured hundreds of others - welcomed a son named Memphis exactly two months after the tragedy.
"Both of us have names that are pretty common, Jason and Brittany, so, something that's unique is our main goal", he told Entertainment Tonight of choosing the name Memphis. Just one week after the tragic event, the pair returned to Las Vegas in order to visit some of the victims wounded in the shooting.
This little boy will be truly a joy to watch grow up and he certainly has a bright future ahead of him! Understandably, the expectant parents are extremely excited about their son's arrival and haven't been shy about keeping fans in the loop via social media throughout Brittany's pregnancy.
As Nicki Swift previously reported, Jason and Brittany announced that they were expecting back in May.