VERY SAD NEWS: 12 Minutes Ago in Georgia, USA: At the Age of 66, Mattie Denise, Daughter of Country Music Legend Alan Jackson, Tearfully Announced Urgent News to His Followers That Alan Jackson Is Currently. In an emotional and tearful moment that has left the country music world shaken, Mattie Denise, daughter of country legend Alan Jackson, has just shared urgent and deeply personal news regarding her father’s current health condition.