A notice indicates the four graves here are of: Reisul Ülema Mevlana Molla Ali (Father of Mevlana Molla Cemaluddin); Mevlana Molla Cemaluddin (father of Mevlana Molla Muhammed El Müderris (father of Mevlana Molla Kasım) and Mevlana Molla Kasım (father of Gavs-I Azam Fakirullah Hz. Nin).
(I am not certain if the terms Cemaliddin (Whose face shines with faith) and Müderris (teacher) are part of their names of titles. These translations I made with help of dictionary, not being a native). Molla can be a muslim judge, but has other elements too.