[morwalugi]

Apparently naming the monster after its creator was a common mistake
pretty well from the beginning

" In the novel, the creature has no name?a symbol of his parentlessness and lack of human sense of self and identity. He does call himself, when speaking to his creator, Victor Frankenstein, the "Adam of your labours". He is also variously referred to as a "creature," "fiend," "the d?mon," "wretch," "zombie," "devil," "being," and "ogre" in the novel.[1]

The monster's namelessness became part of the stage tradition as Mary Shelley's story was adapted into serious and comic plays in London, Paris, and France during the decades after the novel's first appearance. Mary Shelley herself attended a performance of Presumption, the first successful stage adaptation of her novel. "The play bill amused me extremely, for in the list of dramatic personae came, _______ by Mr T. Cooke,? she wrote her friend Leigh Hunt. ?This nameless mode of naming the unnameable is rather good.?[2]

Into this vacuum, it is understandable that the name of the creator?Frankenstein?would soon be used to name the creation. That mistake was made within the first decade after the novel was published, but it became cast in concrete after the story was popularized in the famous 1930s Universal film series starring Boris Karloff. The film was based largely on a play by Peggy Webling, performed in London in 1927.[3] Curiously, Webling's Frankenstein actually does give his creature his name. The Universal film reverted to the empty cypher, however: the film's credits list the character Karloff plays as a series of question marks. Nevertheless, the creature soon enough became best known in the popular imagination as "Frankenstein"."

Wikipedia