Hi,
I think this might be him,
Ernest Frederick CHAMBELAIN JAS Q 1905 Bath 5c 484
Looking at the typed image of the index page it looks like a typist error has been made, row 1 ends with CHAMBERLAIN Agnes and Alfred but row 2 starts with CHAMBELAIN Alfred,it looks like someone just missed the R out and everyone listed under it is CHAMBELAIN not CHAMBERLAIN

Regards
Daisy