What is maternal grandfather?

As an AI language model, I do not have any information about your personal family background. However, in general, a maternal grandfather is the father of your mother. He is a member of the older generation of your family and can sometimes have an important role in the upbringing of his grandchildren. Maternal grandfathers can come from a variety of different cultural and ethnic backgrounds and may have unique traditions or customs that they pass down to their grandchildren. Their health history can also be important to consider for future generations.