His scholastic interests included archæology, folklore, palæography, mediæval history, architecture and church music; and he was a collector of missals. Towards the end of his life he was made an Honorary Fellow of Hertford College, Oxford, Honorary Reader in Palæography to Durham University, and Honorary Librarian to the Chapter Library of Durham Cathedral, which he left one of the best cathedral libraries in Europe. He died at Durham in 1932.
Apart from The Lost Stradivarius, Falkner was the author of two other novels, The Nebuly Coat (1903—also published in Penguin Books) and Moonfleet (1898). He also wrote a History of Oxfordshire, handbooks to that county and to Berkshire, historical short stories, and some mediævalist verse.