More than that; he sought to improve on the original design.
As an aside, there really was a Baron Frankenstein. He was Johann Konrad Dippel, the Baron of Frankenstein.
He really did experiment on dead bodies trying reanimate them. He was a brilliant man, and the guy who invented “Prussian Blue” dye used, to this day, to color microscopic samples. But also a complete madman and heretic.
https://en.wikipedia.org/wiki/Johann_Konrad_Dippel
She was staying not far from Castle Frankenstein when she wrote her novel.
https://en.wikipedia.org/wiki/Frankenstein_Castle
Thanx for the addition to my aging memory.