UPDATE: Wilson died of a self-inflicted gunshot wound, according to her rep, reports People.
David, 34, a singer-songwriter, died at his home in Heber Springs, Ark. of an undisclosed cause.
Mindy, 37, gave birth last April to David's baby, Zayne.
"David was my soulmate; he was a caregiver and guiding hand to our sons, Zander and Zayne. He was a precious gift from God to all of us and, yesterday, he returned home and is now with his mother and father," Mindy said in a statement.
"David loved and was loved. Those who knew and loved him will miss him; those who did not know David missed the opportunity to know a truly loving and gifted man."