Sorry, I misunderstood.I'm not a computer programmer, but I have good organization skills and experience.
To answer your question, I use the caption as part of the file name. In your example, my caption would read:
Mary or May Wendt Wilson_son Carls child Bryan 081934.(initials of who gave me the photo).jpg
For me, it isn't necessary to say in the caption that Carl was her son AND his son Bryan was her grandson. If I write that the baby is her son Carl's child, anyone should know that Bryan is her grandson.However, I always include the woman's maiden name in the caption.When we get back into the earliest days of photography, we learn just how many Marys and Sarahs there were with the same last name.
I don't know anything about the program you mention.If I have a lot to write about the subjects or the picture in general, I make a Word document out of it and write a whole page if I need to.I almost always make a Word document for things like family group pictures from family reunions. I like to use the two-column format because it automatically adjusts the size of the photo to fit the column.
I use Nero for editingphotos, and it allows a little longer description. I learned quickly that a long captions using Windows Photo Viewer does not work.When I wanted to pull the photo up to print or whatever, I was told there was not enough memory, which I knew was not true.If I shortened the caption, I could pull it up. Some folks with whom I share photos do use Windows Viewer, and if the caption is too long, they can't access it, either.
Also, if you share photos via email, will others be able to access it without having the program?From time to time, someone sends me photos or obits, etc., in Adobe.If I didn't have Adobe, I couldn't access it.
My organizational experience tells me that you will run into a problem if you don't name the photos something besides Scan001, etc.I'm not sure whether or not each new scanning session starts the numbering all over again, but I do know that when I download from my digital camera, each new session starts the numbering all over at Scan 001.If I didn't name them something else, I'd have about two dozen Scan001 photos with no mention of who the subjects are.