Schexnaider or Schexnayder is a fairly common name in areas of South Louisiana. It's easy to see how Shakesnider could have been corrupted from that. I have also seen the latter name as Shakesnyder. (My last name is Carlton: can't do much to that one except insert an "e" and make it seem too damn fancy for my taste (or too old school). Of course I could have owned Carltone Records, but that's a whole 'nother story.