Who wrote the original Frankenstein?

Interesting fact:

Frankenstein is the name of the character who created the monster, not the monster itself. The two are often mixed up, but the monster remains nameless. The story wouldn’t have existed if it weren’t for Lord Byron, who proposed a writing contest to his friends when they were stranded in a house with bad weather. The author in question dazzled the group with a phenomenal story and went on to publish it, originally under a pseudonym.