Jane Hathaway writes that the Haram are presented (but not explicitly stated) in Arab chronicles as a Bedouin tribal group, opposed to the Sa'd faction.
[1] The tribe "evidently had a lengthy presence in Yemen", as "pre-Islamic inscriptions in the south Arabian language refer to a H-R-MM".
[2] According to Hathaway, the mediaeval Moroccan traveller Ibn Battuta (1304-1377) reports that the 'Banu Haram' people lived in Hali in the north of Yemen.
[3] Similarly, Hathaway writes that Yahya b. al-Husayn reports that the Jabal Haram (the mountains of the Haram people) in northern Yemen "submitted to the Zaydi imam in the late thirteenth century".
[4] Sultan bin Muhammad Al-Qasimi writes that in 1760, soldiers "fled to Qishm to seek assistance from Shaikh Rahmah and the Al Haram tribe" on the Persian coast.