Shafi Ibn Sha’ban, the leader of the sub-tribe of Bani Hajar of Qahtan in the mid-XIXth century, is the one who led his tribe from the valleys of Najd to the shores of Eastern Arabia (al-Ihsa) in 1248 H, which is equivalent to 1832. The Bani Hajar, separated from the bulk of their Qahtan brethen, eventually broke away, and became a separate, self-standing tribe (singular al-Hajri). Source: Mohammad Saud al-Hajri, who is a reliable historian. Shafi Ibn Sha’ban is all over the Abbas Pasha Manuscript section on Dahman Najib (also in the extracts published at the end of Lady Anne’s Journals with her annotations), and appears in connection with the Dahmah Najiba of Ibn Aweyde. Lady Anne, in her notes, wondered about his identity. It makes sense: as the head of the tribe, he did not need to be introduced. She also mentions the Bani Hajar as living in East Arabia, most of them being pearl divers.