What family was jerry going to live with in Bud Not Buddy?

In "Bud, Not Buddy" by Christopher Paul Curtis, Bud Caldwell is hoping to live with the Amos family after he escapes from a home. However, he quickly discovers that the Amos family does not treat him well. His ultimate goal is to find his father, whom he believes to be a jazz musician in Flint, Michigan, specifically looking for a man named Herman E. Calloway.