Ernest Pendered George Pendered

[Depper]

George Pendered born Birmingham 1870. He was my great grandfather. He was a soldier in the Oxfordshire and Bucks. Light Infantry Service Number 20058. It is believed he deserted his family having been sent to India in the 1st World War.
Ernest Pendered was born(date unknown) and enlisted in Birmingam into the Worcs.Reg. Service Number 23738. No trace of Ernest in Civil Birth Records.
On the CWGC site I find an Ernest Pendered now Oxford and Bucks Regiment died 1918 India. Service number 20058.

Is this the same person.
Would like to find date of birth for Ernest from his service records.
Can anyone help or advise
Thank You