"Ibn" means "son" in Arabic and thus "Ibn Saud" means "Son of Saud" (see Arabic name). Although Westerners widely referred to Abdul Aziz as Ibn Saud in later years, "the clan chieftain's title of Ibn Sa'ud continued to refer to Abdul Rahman" until he had established himself as such." (Lacey, 1982, p. 65) Abdul Aziz never referred to himself by this title, and some authors (e.g.Helms, 1981, p. 14), avoid using it entirely. Lacey, Robert (1982). The Kingdom. New York: Harcourt Brace Jovanovich. ISBN0-15-147260-2.Helms, Christine Moss (1981). The Cohesion of Saudi Arabia. Baltimore: The Johns Hopkins University Press.