Final answer:
Eric Blair established his pen name as George Orwell, channeling the patron saint of England and a river he admired, to distinguish his literary work from his personal life.
Step-by-step explanation:
Eric Blair, better known by his pen name George Orwell, was a profound British writer whose works like 1984 critically depicted a society under totalitarian control. Despite the detailed information included about Orwell, there is no direct reference to the establishment of his pen name within the provided texts. However, Blair chose 'George Orwell' as a pen name because he wanted a name that sounded more traditionally English and believed it would help separate his literary life from his personal one. George suggests the patron saint of England, and Orwell was the name of a river he liked. It's noteworthy that Orwell lived through World War I and later served as a military police officer in Burma, which influenced his views on censorship and propaganda, reflected in his literary works.