William Henry Pratt
William Henry Pratt was born in 1887 in London. In 1909, he emigrated to Canada where he turned to acting. Like many thespians, he used a stage name which in William's case was Boris Karloff.
Actually like a number of 20th century actors, Boris had a two-tiered career: BT and AT. That is, before television and after television. And to learn ein bischen about both, just click here.