Just found a Lewis Brumbarger, age 65 in the 1880 Jefferson Co., IN census living w/ brother Richard, where it gives father's birthplace as Maryland, mother's as KY. In the 1790 Census, Washington Co., MD are listed several variations of the name (Brumbach, Brumbaugh, Bumberger), two of which are Jacob. Possibly the Jacob in Jefferson Co., IN?