Robert,
I can't help re the Taylors although I have answered this queery previously in recent times on the forum. Can't remember where though.
There were two Alfred Thornleys who served overseas in the Manchesters in WW1.
Pte. 10571, 12 Platoon, C Coy, 18th (3rd City) Bn. who became a 2nd Lt. in the Northumberland Fusiliers.
and
Pte. 11688, 3 Platoon, A Coy, 19th (4th City) Bn.
regards