Read it through once

“As you are going farther on business, sir, I will take the opportunity of paying a visit, which must be paid some day or other, and therefore may as well be paid now. I have the honour of being acquainted with a neighbour of yours, (turning to Emma,) a lady residing in or near Highbury; a family of the name of Fairfax. I shall have no difficulty, I suppose, in finding the house; though Fairfax, I believe, is not the proper name—I should rather say Barnes, or Bates. Do you know any family of that name?”