There is a case to be made that our personality traits can be associated with the six moral foundations that were figured out by Dr. Jonathan Haidt. By looking at his work and breaking down the six moral foundations by words that are associated with them, I looked at the how they may map onto the ten facets of the Big Five model of personality.
By looking at the Big Five Aspects Scale and the six moral foundations I think a case can be made that our morality is deeply rooted in our temperament. We may be taught morality from our social sphere, but what sticks is what is tied to our personalities. The uploaded word document has the research that backs up this idea.