Jonathan's father emigrated to the United States in 1727 and settled in Pennsylvania. He had one daughter and ten sons, one of whom was this Jonathan Davis who married Elizabeth Bowen. One of their sons was John Davis who married Susannah Bryan; another son was James Davis who married Jemima Hays; a third son was Jonathan Davis who married Mahala Hays, sister of Jemima Hays.
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ref: "Pioneer Families of Missouri"
DAVIS, Jonathan Davis, of PA., married ELIZABETH BOWEN, and they had six children...James, John, Elijah, Septimus, Jonathan and Elizabeth. John and James came to MO in 1800. John was a great hunter and trapper, and spent most of his time in the woods, often being absent for months at a time. He married SUSAN BRYAN, a daughter of DAVID BRYAN, and his children were James B., Jonathan, Joseph C., John H., Unicia and Elizabeth. James, the brother of John Davis, married JEMIMA HAYS, a granddaughter of Daniel Boone, her mother being SUSANNA BOONE. After his marriage he returned to KY and remained until 1819, when he came back to MO and settled in Montgomery Co. His children were John, Elizabeth, Jesse, Susan, Narcissa, Marcha, Daniel B., Unicia, and Volney. Jonathan Davis, brother of James and John, came to MO in 1820 and married MAHALA HAYS, a sister of his brother James'' wife. They had thirteen children, only four of whom are living (1875).