The Collaborative International Dictionary of English v.0.48:

Betide \Be*tide"\ (b[-e]*t[imac]d"), v. t. [imp. & p. p.
   Betided, Obs. Betid; p. pr. & vb. n. Betiding.] [OE.
   bitiden; pref. bi-, be- + tiden, fr. AS. t[imac]dan, to
   happen, fr. t[imac]d time. See Tide.]
   To happen to; to befall; to come to; as, woe betide the
   wanderer.
   [1913 Webster]

         What will betide the few ?               --Milton.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Betide \Be*tide"\, v. i.
   To come to pass; to happen; to occur.
   [1913 Webster]

         A salve for any sore that may betide.    --Shak.
   [1913 Webster]

   Note: Shakespeare has used it with of. "What would betide of
         me ?"
         [1913 Webster] Betime

WordNet (r) 3.0 (2006):

betide
    v 1: become of; happen to; "He promised that no harm would
         befall her"; "What has become of my children?" [syn:
         befall, bechance, betide]