It's such a common mistake. The doctor who creates Mary Shelley in Frankenstein's novel doesn't have a name.
It's a silly nitpick anyway. The monster, Adam, calls the doctor, Victor Frankenstein, his father. Surnames are inherited, thus they are both Frankensteins.
Also, it's not uncommon to call a creation after it's creator ("that painting is a Van Gogh"), so calling him "a Frankenstein" works too.
Kind of a cop-out, since Dr. Frankenstein is referred to as such in the book and the creature never is.
Mary Shelley said herself that there are two monsters in the book and both are named Frankenstein.
Ah, Ernest and William, the younger brothers of Victor. Of course, it all makes sense now!
No it isn't. He compares himself to Adam once ("I ought to be thy Adam, but I am rather the fallen angel, whom thou drivest from joy for no misdeed") but he never calls himself that. And frankly, considering how much Frankenstein and the monster hated each other I don't think either of them would want to share a name.
::: spoiler Spoiler The real monster is the person who wrote in that book with a pen. :::
He acknowledged Adam as his son, and Frankenstein is a surname.
The name of the monster is Adam Frankenstein.
Slavoj Žižek's Freudian-Hegelian interpretation of Mary Shelley's story is worth investigating especially in relation to Shelley's family, the French Revolution, and transgressive sexual politics.