عبد الله الغالب
The Chamber of the Three Niches is an annex to the main mausoleum chamber and houses more tombs, including an epitaph attesting to the first (temporary) burial of the Marinid sultan Abu al-Hasan in 1341 (presumably transferred here after the Saadian construction). Another marble inscription plaque, this time belonging to Moulay Abdallah al-Ghalib, is embedded in one of the walls of the chamber here. Once again, it is unknown why or when this plaque was moved from its original location (at the head of Abdallah's tomb in the eastern mausoleum) to here.