Wandering as a spiritual concept means going wherever life’s path takes us. It is particularly recognized in the taoist religion and signifies going with the flow. You might also like to consult the entries for hermit and tramp as well as the information on tramp in archetypes in the introduction.
Psychological / emotional perspective: As we learn to live in the moment we are prepared to listen to our intuition and not to plan. Wandering in dreams may be alerting us to this faculty within.
Material aspects: Meeting the wanderer in dreams is actually learning to understand that part of us that is the freedom lover, who on a practical level can take life as it comes and not be thrown by external circumstances.
see Tramp in A rchetypes