Bob, I descend from this family also.My line is from the father of John D., John Cromer, b 22 Apr 1758 in Warwick Twp, Lancaster Co, Pa, through his second wife, Sophia Whisman, through their son, Joseph Cromer, b 1805 in Rockingham Co, VA.
I have the following concerning John D. Cromer:
"John D. Cromer was a Private in Dyasrt's Company commanded by Captain Charles C. Carson, 11th regiment, Kentucky Mounted Volunteers, in the War of 1812. He was at the Battle of the Thames under Govenor Shelby of Kentucky.He volunteered for the War of 1812 in Rockcastle County, Kentucky, in July or August of 1813 and was mustered out in October of 1813.Pension records state that he was 21 years old when he enlisted, that he was 5 feet, 8 inches tall, with clear blue eyes, a fair complexion, and dark hair.In April of 1823, John D. married Eliza Ramsy in what he thought was Burkesville, Tennessee, but seems to actually have been Burkesville, Kentucky.Eliza Cromer, in ther pension claim as a widow of the War of 1812, dated December 28, 1878, twice states that she and John D. Cromer were married by a Baptist minister named Ellison in the town of Burkesville, Tennessee.A map of Tennessee in the early 1820's failed to show any town of Burkesville, but there was such a town just across the state line in Kentucky."
from Jan Sparkman, Our Fathers Before Us
I have quite a bit more Cromer information if you would like to contact me.