Hi buzzby,
I don't understand why you would eliminate the one at Karrakatta cemetery, and also I don't understand why you would favour the one at Mendooran cemetery.
You could well be right, but please don't dismiss any of the Snodgrass families mentioned on this thread, particularly not any that have a Western Australia connection.
The Mendooran chap certainly seems to have both WWI and WWII connections, BUT ... BUT ... as YET , no apparent WA connection.
It is only my opinion, BUT .... just because the initials match up, doesn't mean that they belong to either of the chaps at Wagga. It could well be that the museum only accessed the nominal rolls rather than the NAA indexes to the actual service records ..
To my way of thinking it is a HUGE leap to get from JJ Snodgrass on military artefacts found in Western Australia to a chap born in Wagga with the same initials and surname who served in both WWI and WWII....
Cheers, JM