I know it's been a while since you posted this message, but I'm just getting started.I am also looking for information on my gggrandfather, Joseph Barnwell McClendon, born in N Car, died in Tennessee. He had a son, Preston Elbert (my ggrandfather) born in Tennessee, died in Winslow, Arkansas. Preston married Mary Ann Texas Lee and their daughter, Frances Emmaline, was my grandmother. She was born in and died in Winslow, Arkansas. She married John Innis and their son, Glen Uvalde, was my dad.
I have no idea if they are anyone you're looking for, but if you are, I'd be interested in any information you have. You said you were looking for a McClendon/Arkansas connection, and I have one.