The Collaborative International Dictionary of English v.0.48:

Forby \For*by"\, adv. & prep. [See Foreby.]
   Near; hard by; along; past. [Obs.]
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         To tell her if her child went ought forby. --Chaucer.
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         To the intent that ships may pass along forby all the
         sides of the city without let.           --Robynson
                                                  (More's
                                                  Utopia).
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