I have found willett Charlie,have a look at this one for a mystery
47305 William willett,1/5th York+lancs regt,formerly 66347 w.willett 53rd manchesters.
landed in france 26-5-18,transferred to Y+L regt 28-5-18
killed in action 23rd September 1918.
according to the germans,they buried him 2 months before he landed in france,SDGW and soldiers effects registers both say KIA 23rd September and his service record says the same
47305 w.willett is also commemorated by the CWGC,his service record confirms that he was formerly 66347
who did the germans bury
mack