Who is Woodrow Hamilton, Victoria Self, Mr. Wallace, Mr. Appleton from Answered Prayers: The Unfinished Novel and what is their importance?

Woodrow Hamilton, Victoria Self, Mr. Wallace, Mr. Appleton are associated with Jones' history and practice as a prostitute. Hamilton is an acquaintance who introduces Jones to the very businesslike Miss Self. Miss Self runs an escort agency. Mr. Wallace seems to be a very thinly veiled portrait of renowned playwright Tennessee Williams, and the wealthy Appleton is a friend and sexual partner.