Historical Sketches of Kentucky by Lewis Collins, Maysville, KY. and J. A.
& U. P. James, Cincinnati, 1847. Reprinted 1968. Franklin County.

Dr. PRESTON W. BROWN, the youngest of the brothers [John, James and
Samuel], was a graduate of the school of medicine in Philadelphia, and
favorably known to the profession as a successful practitioner of medicine
in Kentucky.  He died in Jefferson county in 1826.

Brown
=
Jefferson-KY

http://www.rootsweb.com/~kygenweb/kybiog/franklin/brown.pw.txt