Friedrich von Junzt (1795-1840) is a fictional character created by Robert E. Howard in the 1931 short story "The Black Stone", and incorporated by H.P. Lovecraft and others into the Cthulhu Mythos.
Howard described von Junzt as a "German eccentric" who "spent his entire life...delving into forbidden subjects"; his magnum opus was the infamous Unaussprechlichen Kulten (Nameless Cults) or Black Book, published in 1839. Shortly thereafter, he was found dead in a locked and bolted room with the marks of taloned fingers on his throat. He had written another book just before his death, but his closest friend, after reading the manuscript, burnt it and then slit his own throat. (CIRCLE: "The Black Stone", Robert E. Howard).
Robert Anton Wilson, in his Schrödinger's Cat Trilogy, writes that von Junzt made a translation of the Necronomicon titled Das Verichteraraberbuch from an unknown Greek copy, and that this was published in Ingolstadt in 1848. (EXP: "Schrödinger's Cat Trilogy", Robert Anton Wilson).