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Wiki
Herbert Pocket, a member of the Pocket family, Miss Havisham's presumed heirs, whom Pip first meets as a "pale young gentleman" who challenges Pip to a fist fight at Miss Havisham's house when both are children. He is the son of Matthew Pocket, Pip's tutor in the "gentlemanly" arts, and shares his apartment with Pip in London, becoming Pip's fast friend who is there to share Pip's happiness as well as his troubles. He is in love with a girl called Clara. Herbert keeps it secret because he knows his mother would say she is below his "station".