Tracy wouldn't a half brother be one with whom you have one parent in common, and a step brother would be when your mother or father is married to his mother or father. Joan TCT222@aol.com wrote: > > Hello > > I was talking to a great aunt and she thought there was a difference between > a stepbrother and a 1/2 brother, one having common father and one having > common mother. Which one I don't know. > > Does anyone have information on this. > > Thanks > > Tracy