There are tons of Guerins (guerrins) in
Arkansas. There was a Joe Guerrin in Southern
California (a cousin several times removed) who owned a small tuxedo rental chain in
LA he had one or two sons who took over and eventially (I think) sold the chain. Joe died several years ago. He was related in some way to my Grandmother Lula Mae Guerrin-McCarty-LeGette-Fleischmann (yes, she married a lot!).
All this is from memory of little things my grandmother said over the years.
She is 97 or 98 and her memory is failing, so I cannot ask here anymore.
Good luck.