Old Mother Hubbard is the titular character in the Mother Goose Stories episode "Mother Hubbard". She has a husband, Sherlock, a daughter, Heather and a dog, Barkley. She is a very forgetful woman, often overlooking the hat on her head, and sometime even forgetting the name of her own daughter.
Old Mother Hubbard went to the cupboard, to fetch Barkley a bone as a reward for helping Sherlock solve a big case. However when she got there, the cupboard was bare! After much investigating by both her husband and daughter, it turns out that Mother Hubbard did not have a bone to begin with; she had forgotten to obtain one.