My 2nd great grandmother is Caroline Marie ( JOHNSON) Rawls. 1824-1913 born in St. Mary, Parish, Louisiana. She was the daughter of James Lyons Johnson and Rachel N. Andrews (some spell it Andrus). James Lyons Johnson was the son of John Johnson and Marguarite Lyons.
They lived in the St. Mary Parish area of Louisiana and were wealthy having a sugar cane plantation.
I have found out much on them from successions but need more. Those Johnsons were supposed to be from Pennsylvania. It was said related to Lyndon Johnson but no connection found.