I have an aunt who lived in Kankakee, IL. Her maiden name was Dorinda Dionne. I think she married someone named Southey. (I don't know if it was a first or second marriage.) she had five sons - Byron, Alan, David, Bruce and Gary. I think she was divorced so I don't know if all the boys had the same last name. But the youngest sons would have been born in the 1940s.
When I saw your post, it made me wonder if there was a connection.