The answer to the question of Harry Lewis's birth name is Harry Besterman. He was born in London in 1947 and went on to become a well-known computer scientist and academic. Lewis changed his surname from Besterman to Lewis in 1968, in order to avoid confusion with his father, Theodore Besterman, who was also a well-known writer and bibliographer.
The James and Jabs of Harry Lewis: A Heavyweight Quiz on the Life and Legacy of the American Boxer