It's written by lexicographer Andrew Delahunty who also produced The Oxford Dictionary of Nicknames.
Christian Molbech (1783-1857) was a laborious lexicographer, author of the first good Danish dictionary, published in 1833.
The incidents of his life are shrouded by uncertain traditions, which naturally sprang up in the absence of any authentic record; the earliest biography was by one of the Sorani, probably Soranus the younger of Ephesus, in the 2nd century; Suidas, the lexicographer, wrote of him in the 11th, and Tzetzes in the 12th century.
He was fifteen years younger than his brother Louis, a great Latin scholar and lexicographer, who survived him.
Johnson had, in his prospectus, told the world that he was peculiarly fitted for the task which he had undertaken, because he had, as a lexicographer, been under the necessity of taking a wider view of the English language than any of his predecessors.