Nana McBride is Clyde's adoptive grandmother and the mother of either Howard or Harold.
Biography
Similarly to Dr. Lopez, Clyde's Nana has yet to make a physical appearance in the show. She is first mentioned in the episode "Get the Message", in which Clyde uses one of her perfumes. In "Along Came a Sister", Clyde brings Lincoln a casserole that his Nana made. It is mentioned that she believes there is no greater comfort in times of grief than casserole. In "Lincoln Loud: Girl Guru", Clyde says that his nana believes you cannot trust people who do not love chocolate.