Hiya
have you any recollection of your Dad telling you where he might have been buried? i am assuming there was a church funeral service and so it may have been in the local paper including a death announcement, and there would likely have been a burial. do you have any surviving Aunts or uncles who may have any info on a graveyard? Ths burial register at the church will be useful to tie into a death registartion. most churches do have a grave book also, dentifying the burial plots in relation to the graveyard plan.
Many children were buried with grandparents and so if you have the grave site for your gtandparents the boy may well have been buried there too.
It does not always follow that there is a gravestone or memorial but the burial register or grave book will identify the plot.
Once you have the date of death from the register you can get the death certificate from the local register office and this will give you the date and place of death, the cause of death, who regfistered the death and the deceased age at death. This is also included on some of the civil death indexes and also the place of birth, which can vary depending on who registered the death , some people give the registration district as place of birth based on birth certificate info, whioch can be different to the actual town of birth which may be a sub-district of a reg. district.
i am tiored or i could ramble on but hope that helps abit too, the above answers are also a start.