Carter was married three times and had one child with each husband. All three of her children would go on to have successful careers in country music. Her last marriage was to Johnny Cash. In 1968, Cash proposed to Carter during a live performance at the London Ice House in London, Ontario, Canada. They married on March 1 in Franklin, Kentucky, and remained married until her death in May 2003, just four months before Cash died. The couple's son, John Carter Cash, is a musician, songwriter and producer. 