The Collaborative International Dictionary of English v.0.48:

Erelong \Ere`long"\ (?; 115), adv.
   Before the ?apse of a long time; soon; -- usually separated,
   ere long.
   [1913 Webster]

         A man, . . . following the stag, erelong slew him.
                                                  --Spenser.
   [1913 Webster]

         The world, erelong, a world of tears must weep.
                                                  --Milton.
   [1913 Webster]