Looking for very basic ham and bean soup recipe?

My grandma used to make the best ham and bean soup. She now has Alzheimers disease and cannot remember how to make it anymore; of course she never wrote her recipes down either! Her family was very poor when she was growing up and her mother used to make this bean soup. There are very few ingrediants, I am just not sure of the measurements for the most part. From what I remember it had: Beans (Northern or white I believe), ham, stock of some sort, a bay leaf ( I think) salt and pepper, and either a very mashed potato, or some of the beans were mashed to thicken a bit. Maybe a bit of milk? No other veggies at all that I can remember. She also would put dumplings in it too, which was especially yummy! Anyone's help would be greatly appreciated! Thanks!
The only veggie there is in this soup is possibly potato. No onion, celery, or carrots. Thanks