Send a message to the person who requested a photo of the grave monument of Maria Sparkes with the following comment:
For research. I work in a museum which has some objects relating to these people and I want to confirm the details as I thought Msria the younger died in 1866 not her mother, also called Maria but she was only 29. I do not have a confirmed date of death for Maria the elder who was probably in her 70s when she died. Possibly they both died the same year.