Many researchers have contributed towards developing the lineage of the Jackson family forward from Anthony Jackson, born 1540, of Kelwolde (Killingswold) Grove, England. Jane Parker McManus, in her book, Pioneers West of Appalachia revised, published 1984, summarized the descendancy of the Jackson family from Anthony Jackson to Isaac Jackson, born 1717 in Marlborough, England, who emigrated to Chester County, Pennsylvania before 1740. Isaac's grandson Levi Jackson became the ancestor of Joyce's Jackson family that settled in Vernon Parish, Louisiana by the mid 1800s. This Levi Jackson fought against Santa Ana's army in the war that established Texas independence from Mexico. Levi Jackson died in 1839, before receiving his bounty land for his war service, leaving his land in Robertson County, Texas to his heirs.