Navy Williams was born on Feb. 4, 2019. She is Jason's youngest child and his second child with current wife Brittany. Though Brittany told Us Weekly in May 2020 that she'd like to have more children, Jason has told her he doesn't want more than the four he has. Like Memphis, Navy has also travelled with her dad on tour, and Jason told Us Weekly in January 2020 that she just started walking and has a few teeth! Brittany told Country Living in 2019 that Navy is calm and sweet.