So, if your and my "Aunt Margie" are the same, she then married into the Vance family.
There is a terrible lack of birth and death records in Missouri. I found that Jim and Cristel were married in St Francois Co, Mo. I do not have the date in front of me now.
I have Cristel's family history for the most part, but none on Jim, except for "Aunt Margie."