Alan Jackson and his wife Denise are going to be grandparents again. Their daughter, Mattie Jackson Smith, is expecting a baby with her husband Connor. This will be the second grandchild for Alan and Denise. They shared their excitement in a post on social media. "Blessings are overflowing in our growing family," he wrote in the caption of his post. "Denise and I are thrilled for our second grandson to arrive in June! We're so happy for proud parents Mattie and Connor Smith and can't wait to meet the next addition to our family."