He's only referred to as Sidney the snail on one occasion, throughout the MS he's just Sidney or Sid. The name is quite playful which suits his personality, I think. I don't want to turn editors off before they've even read the first stanza if alliteration is a total no-no, though.
Linnea-Garcia, thank you for those suggestions! They're all great!
Would love any other name ideas, and/or opinions on Sidney vs Wesley vs ??? for an adventurous, sweet but slightly cocky male mollusk! He started life as Willie (nn Will) and after countless revisions, I'm not even sure why it changed!
Thanking you all in advance.