Leonard Cooper (nephew via Sheldon)Unnamed niece (via Sheldon)Constance Cooper (niece via George Jr.) Production First episode The Porkchop Indeterminacy (TBBT) Pilot (Young Sheldon) (YS)Some New York Nonsense (GMFM) Last episode The Bow Tie Asymmetry (TBBT) Memoir (YS) Number of episodes 3...