I believe most of the characters have not been even in the remote parts of the Shire itself, if they even were ever outside their home village (some, as it seems to me, never were), so someone who knows even the Shire and knows how to take a shortcut (to mushrooms
) through the fields etc. will be largely appreciated. Maybe Fredegar or Tansy could advise to take Brown along since they know how well-travelled man he is, so they could write him a letter or something and they'll either arrange a meeting in some village or inn or they wait for him and he arrives to Brandy... whatever... (I have total blackout, I forgot how the place is called in English
)