There are at least three writers called Peter Davison, and probably several more. Peter Davison (1928-2004), American poet, critic, and publisher, is the author of The Fading Smile and other works of poetry and criticism (the photo is his). Peter (Hobley) Davison (b.1926), of De Mortfort University, writes on English drama, George Orwell, and popular culture (see also under Peter Hobley Davison). The books of alien planets and monsters are associated with the English actor Peter Davison who played the fifth Doctor on Doctor Who. The authors of A Faith of Our Own and of the books on sailing, camcorders, and contract law, are probably separate from these three and from each other.
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