I have an Ann Coldiron who married an Aaron Pennington in my database. I have her as a daughter of Conrad Coldiron b. abt 1760 Berks Co., PA, and Rachel Hendricks, b. abt. 1763 in Rowan Co.,NC. Conrad and Rachel started their family in Rowan Co., NC in 1783. The family moved to Ashe Co, NC in 1791 and stayed there until ?. They were on their way to Kentucky and probably stopped in Lee Co., VA because one of their children, the last one, was born in Virginia in 1803. They reached Knox(now Harlan) Co., KY in 1803, where Rachel died.
I found Aaron, age 73, and Ann Pennington, age 60 on the 1860 US Census, Harlan Kentucky, so she was b. abt 1800. Stated she was born in Virginia.
I saw Ann included in this family group in trees posted to Ancestry.com. I don't know how accurate their source information was. But it makes sense. Some of the children listed as Aaron's were born when Ann would have been too young to be their mother, so perhaps Ann was his second wife...? Hope this helps a litle.