Bio: One of three sons to Alphonse Frankenstein. His brothers being William Frankenstein and Victor Frankenstein. Victor was the creator of Frankenstein's Monster, who, after he abandoned it, took a great deal of revenge on Victor, including killing William when he was still just a young boy.
After a long drawn out battle between parties, where Victor Frankenstein eventually died, Ernst met Mary Shelley in 1815 on her journey to Switzerland, where he relayed the entire horrific story to her. Mary Shelley would then of course go on to write Mary Shelley's Frankenstein, believed by many until the reemergence of Frankenstein's Monster again in the late 1800's to be a complete work of fiction.