I don't find the Ridenour family in Madison County, nor is there any information in our records on them.
I do have a researcher's name from several years ago, who is researching the Ridenour family.He states that some of the children of William Harrison and his wife, Elizabeth Gabbard Harrison, married into the Ridenour family.Could this William Harrison be related to Elmira Harrison who married George Washington Ridenour?
If you would like this researcher's name and address, please contact me at my personal e-mail address of firstname.lastname@example.org.
I suggest you search the records of Newton County, Arkansas, which is to the east of Madison County; and also Johnson County, Arkansas, which is to the south.
Joy Russell Madison County Genealogical & Historical Society Huntsville, Arkansas