The Mitchell Family is a fictional family from the television show 'My Three Sons'. The family consists of father Steve, mother Margaret, and their three sons, Robbie, Chip, and Ernie. The family is also joined by Uncle Charley O'Hara, who moves in to help take care of the boys after Steve's brother-in-law dies. Charley is a retired Navy officer and provides a strong male role model for the boys.