Try Ancestry.com - Public Member Trees:
Edward M Porter - born May 22, 1815, Grant, USA
died Mar 8, 1840 - Peoria, Illinois
Md: Cynthia Ann Story - Mar 8, 1840, Fleming, KY
Son: James Wesley Porter died in Goddard, KY July 1913
Several others are also researching this man, according to Public Member Trees. It appears he may have been married twice. 2nd wife: Martha Ann Carrington. Other children by this union.