Long story - will try to condense.
Basically am 48. My Dad died in 1994 aged 61. Then in 2015 my Mum died aged 81. Then 6 months later my Sister died of a rare autoimmune condition aged 49. They were all buried in the local cemetery as Dad had purchased a 3 person grave plot so they are all together - all wearing fluffy socks ( which was my own contribution!)
I'm the only one left and it's been a rollercoaster but am doing ok.
But something is midering me. In 1963 my mum had a stillborn baby. She had already had a miscarriage previously. But this baby made it to term, but was stillborn. He was a boy, and they called him Keith. They then went on to have my sister then me.
Mum talked about this baby, Keith. How she never got chance to see him, although my Dad did. He said he was perfect, but blue. She was sent home with tablets which my Dad promptly flushed down the toilet and she got on with it.
She never forgot our Keith. He was apparently buried in a mass plot in the cemetery that was for stillborn babies. There is a grassy area not far from Mum, Dad, and Sister where it is acknowledged that the neonates went - now there is a SANDS monument there in memory which appeared a few years ago.
It niggles me that Mum and Dad had such a loss that wasn't dealt with well, and also that my Brother is out there somewhere unmarked and unacknowledged. I plan to have a plaque added to their gravestone with his name etc. Does this sound maudlin? Also I would like more information as to where he is exactly.
I just want to feel that they are all together? 
Does anyone have any suggestions as to how I can go about this?