C. Montgomery Burns once told a group of children at Springfield Elementary School that if they wished to succeed in business, they "must slay" the "three demons" of family, religion, and friendship. Mr. Burns indeed operates from a cutthroat, lone wolf, go-it-alone mindset. With the exception of his loyal assistant and biggest fan, Waylon Smithers, there isn't anyone he could call family. 

However, at one point, Mr. Burns had ten older siblings, all of whom died in dark and awful ways. One was trampled by a horse, one got impaled on the Chrysler Building, and another was stabbed. On top of all that, Mr. Burns' twin sister was shot, another sibling spontaneously combusted, one fell down a well, and the rest consumed poisoned potatoes. The only children in the large family of Clifford and Daphne were the future Mr. Burns and his younger brother, George, as in legendary comedian George Burns. 

As a boy, Mr. Burns went off to live with — and learn the ways of life from — his grandfather, Wainwright Montgomery Burns, an evil billionaire who ran the Springfield Atom Mill like a tyrant. And no, this didn't exactly help Mr. Burns become a fine, upstanding, caring citizen.