Jeb Bush welcomes fourth grandchild

Washington (CNN)Jeb Bush is now the grandfather to four children.

His oldest son, Texas Land Commissioner George P. Bush, announced the birth of his second child -- John William Bush, or "Jack" -- Monday afternoon on Twitter.
The former Florida governor responded in a tweet of his own, saying: "Proud granddad. Looking good Jack!"
It's the fourth grandchild for Jeb Bush, and it comes as he prepares to launch a campaign for the 2016 Republican presidential nomination.
    Bush isn't the only presidential contender to recently welcome a new grandchild. Democrat Hillary Clinton became a grandmother when her daughter Chelsea had her first child, Charlotte, last year.