P.N. Dedeaux is Geoffrey Atheling Wagner (1927-2006), an English born American translator and writer of novels, essays and criticism.
He was born in the UK before becoming a US citizen. He lived most of his life in New York and was a Professor of English there. His PhD was gained at Columbia University where he taught. He also taught at University of Rochester and NYU as well as at the City College of New York.
Wagner was married to the figurative artist Colleen Browning, whom he met in Ischia and quickly married in the US (1949). She died in 2003 at the age of 85, Geoffrey dying a few years later. He was a good friend of John Glassco, who is known for his magnificent The English Governess.