What sort of balance in motivation existed for the first Crusade between answering a plea for assistance from the Byzantine Empire and reclamation of Jerusalem?

Obviously it would vary between individuals at the time of the Crusade's inception. I want to get an overview of the presumably different sort of motivations that existed for people in various positions.

Any answers from personal accounts(such as Pope Urban II, Godfrey of Bouillon or common people/Crusaders) or a from governing bodies(the Church) is what I'm looking for.

I read the question and answers on the other topic, it did not touch on the feelings of common people or Crusaders. While it answers part of the question, I was hoping for some examples of people in more varied positions of power and influence.

  • I was hoping to see evidence indicative of motives, pertaining to the largely unaffiliated and to those instrumental to in putting the Crusade into motion. – Minativ7 Feb 16 '16 at 11:19
  • 3
    See history.stackexchange.com/questions/7915/… for an extended discussion – Felix Goldberg Feb 16 '16 at 12:31
  • 1
    +1 and welcome. I voted to close, though, because it's essentially a duplicate of an existing question. – Felix Goldberg Feb 16 '16 at 12:32
  • Helping Constantinople was certainly NOT among the main motivations. – Alex Feb 16 '16 at 22:53