Peter Kjærulff
From Tolkien Gateway
Peter Kjærulff (born 1947) is a Danish New Age writer.
His 1985 book The Ringbearer's Diary supposedly describes a 'historical' truth behind the literary motif of cursed rings, found for example in J.R.R. Tolkien's The Lord of the Rings, Richard Wagner's Der Ring des Nibelungen and Plato's Ring of Gyges.