Nathan Paul Caldwell was born on March 5, 2007, in Fairfax, Virginia, to Paul Caldwell and Christina Caldwell. He was the couple's fourth child, and they went on to have five more children after him.
Along with his siblings, Nathan is currently being homeschooled.
As a young child, Nathan and his family lived in Woodbridge, Virginia, where his father was a Pastor at Heritage Baptist Church. In 2008, his father was sent by Baptist International Missions, Inc. to plant a church in Fayetteville, Arkansas. He has lived there with his family since then.