I've been helping my Mum track down the grave of some of her family. Her parents died when she was quite young and she isn't in touch with any other branches of the family, as they 'branched' some decades before she was born.
We found that the plot is owned by another branch of the family, but in it are buried a mixture of 'our branch' and their branch. However, the headstone they have erected only lists the people from their branch. Most notably, in the grave (unmarked) are my Mum's favourite Auntie and two stillborn twins who would have been my Mum's Aunties had they lived.
I think it's so sad their names aren't on their grave. But we aren't in touch with the owners, and it's an expensive-looking headstone with no real space for more names.
I wonder if they'd mind us getting a small decorative rock engraved and leaving it on the plot, with the idea that it would be small enough not to obscure the main headstone? Would you ask the church for contact details and get in touch with the plot owner first to check?
If the church doesn't have any contact details, or we can't make contact, would you just do it?