A reconciliation occurred between Jessie and her father when he promoted Frémont's famous explorations of the West. Senator Benton had been persuaded by his ailing wife to accept the marriage, and the couple moved into the Benton home. Frémont left his pregnant wife behind in the spring of 1842 to lead his first expedition to mark the trails West. He returned, however, days before the birth of their eldest child, Elizabeth Benton "Lily" Frémont, who was born November 15, 1842, in Washington D.C. He then headed off again, and Jessie and the baby remained behind.