I forgot to include:
Elizabeth and Francis had slaves in Catahoula. He was born in Georgia. Their marriage record states she was born in MS. In 1850 she is listed as EH Oliver in Black River, La. then found again in 1880 with son James.
I'm feelings these are the people I need to research because:
Mitchell and Mary Oliver(my gggrandparents were originally living in La. Their first 3-4 children were born in La as was Mary but Mitchell was born in Ms. I found them in the 1870 Carroll County, Ms census with several other Black Male Olivers also born in Ms with LA wives. So following Richard's advice I did a search on the last person listed in their home, Riley Hannah and found that there was a slaveowner named Jeremiah Hannah in Catahoula , La. But being more insterested in the Olivers I connected them to the ones in Ms and then found the marriage record. I'm thinking both the Verduns and OLivers had slaves that combined doing the marriage. And coming from that area of Ms, wouldn't it be logical to look into the Native American possibilities????