Ages: 69 and 67, respectively
Philip and Joanna are Joseph's parents and Caitlin's grandparents. They live fairly close by, so Caitlin sees quite a bit of them. She is often sent to their house or to her Aunt Marge's when her father goes away on business trips.
Philip is a constant jokester; he has a great sense of humor and knows how to enjoy the little things in life. Joanna is the ideal grandmother; very few things escape her notice, and she does a good job of managing Philip's jokes.