Who is John Weemsby from Citizen of the Galaxy and what is their importance?

John Weemsby is related to the Rudbek clan through marriage, John Weemsby (or "Uncle Jack" as he introduces himself to Thorby) has been running the Rudbek estate since the disappearance of Creighton and Martha Rudbek. In truth, he has only one nominal share in the company, and must be motivated more by a desire for power and rank than for wealth. "Uncle Jack" is friendly and welcoming to Thorby, who turns up after being missing for fifteen years. Thorby sees through Weemsby affectations of friendliness, and is a little hesitant to trust him from the beginning, although he is somewhat sympathetic to the man.