By naming, by using proper names, the poet establishes a personal connection to the person/place/thing he names. In doing so he displays a connection which is important to the poem, more important than the thing named or the poet himself. It should be this connectedness that resonates with the reader; it then does not matter if the reader has knowledge of the thing/place in itself, as long as he can identify with that sense of connection in himself. Place, poet and reader become secondary to the poem and its expression; they become connotations of the primary idea.
Whew! Who thought simple poetry could become so philosophical! Anyway, continue to name that place; claim it and give it meaning.