1900 census shows parents had 4 children, 3 living. Eva Pavlet's notes show 4 children - including Raymond.

Herbert's birth record (1896) shows Alfred and Charles as siblings.

Ivan's birth record (1899) shows only Alfred and Herbert.

It would appear that Charles died between 96 an 99.

Another explanation is that the two siblings Alfred and Charles recorded in 1896 was really "Alfred Charles", since Charles was Alfred's middle name.

I think that Raymond was born and died between Alfred and Herbert. This supports Eva's notes.