Why did Herman E. Calloway become so upset upon hearing the name Angela Janet Caldwell?

Herman E. Calloway became upset upon hearing the name Angela Janet Caldwell because it stirred up painful memories related to his past and the loss of his family. Angela, as a significant figure in his life, likely represents unresolved emotions and trauma associated with her absence. This reaction underscores the depth of his grief and the impact of past relationships on his present state of mind.