Jacob was the son of John Newton Esterline (May 13, 1893 - ?) and Elisabeth Showers (17 May 1894 - Feb 1970). He enrolled at Temple University as an accounting major in 1938.
Jacob was the child of John Newton Esterline born on May 13, 1893 and Elisabeth Showers born on May 17, 1894. In 1938, he began his studies in accounting at Temple University.