Interesting. I use Find a Grave a lot for my research. Did you use that?? I might be able to find something new...if you wish to post me privately.
No. My aunt who was dogged to join DAR did all the research in the late fifties and she gave the info to myself and sister. She did it by mail, traveled everywhere, took pics of graves, etc. She found this story in the records of a county in PA. This must have been how they recorded events then, for lack of a newspaper. It was sort of sad, they had thirteen children, which gave names birth dates. There were three young children who died within two days of each other, I would think it probably was some kind of flu.