Thank you! It was very interesting to read that section of the book. The story about Michael taking his mother to the doctor because she was in so much pain fits with what is on her death certificate (which I have,) that she died of carcinoma of the stomach.
At the end of the section though it says that Michael died in 1979, and his wife Katerina in 1981. Is that just a type-o? It had just talked about him and his wife Maria and their raising 10 children.