The following data is extracted from A History of the Pioneer Families of Missouri - Montgomery County.
James Nowlin and his wife, Martha Collins, were natives of Scotland. They came to America prior to the revolution, and brought all their household and kitchen furniture with them. They settled first in the eastern part of Virginia, but afterward removed to Pittsylvania County. Their only son, Bryan W. Nowlin, was a Captain in the American army during the revolution. He married Lucy Waide, of Virginia, and they had fifteen children, thirteen of whom lived to be grown, and twelve of them married. The eldest son, Peyton, married Lucy Townsend, and settled first in Kentucky, from whence he removed to Saline County, Mo., previous to 1820, and raised a large family of children. Richard Nowlin, brother of Peyton, married Celie Shelton, and settled first in Kentucky, and afterward in Saline County, Missouri. Samuel Nowlin married Fannie Paul, of Virginia, by whom he had Joseph and David. His first wife died, and he was married the second time to Elizabeth Everson, by whom he had two daughters, both of whom are living in Virginia. Joseph Nowlin lived and died in Lynchburg, Va. David studied law at the University of Virginia. In 1835 he married Elizabeth Berger, of Virginia, and the following year he came to Missouri and settled in Montgomery County, where he practiced his profession, and was elected to several official positions in the County, which he filled with credit to himself and his constituents. He was also a Baptist preacher, and possessed more than ordinary powers as a pulpit orator. His son, Samuel S. Nowlin, is an attorney, and lives at Montgomery City. He has served his County as Circuit Clerk, and made one of the best officers the County ever had. He possesses a large influence, and his prospects for future political advancement are good.
Source: A History of the Pioneer Families of Missouri - Montgomery County