When having coffee Frank says that he misses Phil's mom on the fourth of July and Phil says "I didn't know she was so patriotic." In Goodnight Gracie (2013), when the family goes down to Florida for her funeral they mention that she loved the fourth of July and Alex lights up fireworks with a lighter her grandmother left her.
Jay calls Lilly Joe's cousin. Joe is Lilys uncle being the half brother of her father.