I have to express my indebtedness first of all to the executors of Henrietta MacOubrey, George Borrow's stepdaughter, who kindly placed Borrow's letters and manuscripts at my disposal. To the survivor of these executors, a lady who resides in an English provincial town, I would particularly wish to render fullest acknowledgment did she not desire to escape all publicity and forbid me to give her name in print. I am indebted to Sir William Robertson Nicoll without whose kindly and active intervention I should never have taken active steps to obtain the material to which this biography owes its principal value.