Martha later suffered from ill health, including diabetes, and frequent childbirth further weakened her. Her mother had died young, and Martha lived with two stepmothers as a girl. A few months after the birth of her last child, she died on September 6, 1782, at the age of 33 with Jefferson at her bedside. Shortly before her death, Martha made Jefferson promise never to marry again, telling him that she could not bear to have another mother raise her children. Jefferson was grief-stricken by her death, relentlessly pacing back and forth, nearly to the point of exhaustion. He emerged after three weeks, taking long rambling rides on secluded roads with his daughter Martha, by her description 'a solitary witness to many a violent burst of grief'.