My gggrandmother was Louisa Iscenhower the sister of John D Iscenhower. They were born in Missouri. The family moved to Arkansas before their father (Daniel's) death. According to my family's information, Daniel was buried at Oil Trough, Arkansas. The cemetery there was used by the Confederates, but no longer exists as a cemetery because a couple of guys bull dozed the stones off and built houses there several years ago.
After Daniel's death, Mary moved the family to Wiseman in Fulton County, Arkansas where she is supposed to be buried, but her grave is unmarked.
There were Iscenhowers in the Hot Springs area at this time who I believe the family was related to. There were also Irons at Hot Springs. Louisa married Sidney Irons and moved to Texas about 1848.
They are buried together in a pasture in Hopkins County, Texas, north of Sulphur Springs.