My wife and I spent 15 years caring for her parents, both of whom struggled with dementia. This is the final installment of a 10-part series that introduced you to Arthur, Barbara, and our family’s journey. Our initial goal was to share our triumphs and challenges to help others. If we helped just one family, then we have accomplished our goal.

Like many in their generation, Arthur and Barbara were ordinary people who occasionally did extraordinary things.

Barbara was born in September 1930 in B...