This book (described as 'an experiment in biography') has been highly regarded for years, partly due to the extraordinary character it depicts & partly due to its account of the protracted & complex investigation carried out by its author. 'Baron Corvo', real name Frederick Rolfe aka 'Fr Rolfe' was the son of a Cheapside piano tuner who was dismissed from studying for the Roman Catholic priesthood & then led an impoverished picaresque life around Britain & latterly Venice, functioning variously as an author, artist, photographer, inventor, conman (& allegedly pimp for boys in Venice). He is best known for his wish-fulfilment fantasy 'Hadrian VII', in which a poor English Catholic with priestly aspirations becomes Pope & sets Europe to rights before being martyred. Rolfe's personality was clearly narcissistic & paranoid, leading him into repeated disputes & legal conflicts. It took much effort on the author's part to track down people who knew Rolfe & were prepared to share their experiences of him, but the result is an astounding portrait of a very odd & unsympathetic yet strangely fascinating man.