Liz - Are you referring to Thomas Richeys 1883 military service records from his stint with the Queens (Royal West Surrey) Regiment?
Its the WW1 records of Thomas Richey.
So far I see that he says 'yes' to have you served in the Royal Navy (links with the census finding on ship)
It is for Army Resevist (links with the census finding of the Thomas Richey with his sister)
and next of kin is stated as Catherine Ferguson (which we have found was nee Hollingsworth and incorporated with the Smiths at some times)
So (and I only have got up to page one) this guy seems very much to link all those together.
All it doesnt explain is why he used the surname Richey.
Says he was born Holborn. (Durham guy with father PAtrick looking less and less likely)
One other point - he seems to say age 42 in enlisting in 1941 - making a birth year of about 1872 not 1866, perhaps he just felt a bit old and wanted to appear younger.
Will report back any more findings of any significance as I read through.