I am also studying info from MS census. I suggest you put in writing anything you find and date it. Even in my research numbers don't all line up and some of it I KNOW the correct information for.
There were no paper death certificates so family stories are stories of FACT.
Black people could not fill out legal documents, so there was ALWAYS someone else who did so. Remember to be literate, can cause death.
If the census taker came through and the family house was empty, they didn't want to come back, so a lot of information was made up or gleaned from someone at the next farm. Birth dates were guesstimates, or in some instances remembered by a season of planting or event. Name errors,Ex. my gggrandfathers name was written as DAM, it should be DAN. Black people's southern drawl had to tanslated into correct names. I have a O.G., Fleeta and AUTHA.They were all siblings. O.G. was the only male and the initials meant noting to the census taker. Autha was my grgrandmother's name. I have not heard those names anywhere else, but you know I have no information for anyone but OG because a family member saw my posting on the web.
Sometimes a child or another relative would name their children after a family member or even a slaveholder they may have admired. Certain names also were given in case the family was broken apart by being sold. A certain name or name of a place could always lead you home.
There are so many variables until it makes you want to HOLLA.
Keep charting, keep documenting and leave out nothing. The family member may have changed the spelling of the name to be more independent. HAPPY HUNTING