The small, single-naved church, whose remnants had been visible till the 19th century, has been preserved via photographs of the French architect L.F. Boite. The church used to be in the Acropolis between the Propylaea and the Pinakotheki. According to Pr. Bouras, it was dated to the 12th century. Due to the lack of gothic elements it cannot be dated to the years of the Frankish rule. It has recently been claimed that the small church must have been part of the De la Roche (French dukes in Athens since 1204) building program for annexes and repairs in the Propylaea. It was possible the western chapel dedicated to Hagios Bartholomaios mentioned in the western sources.
Tanoulas T., The Propylaea of the Acropolis at Athens,Jahrbuch des deutschen archaologischen Instituts 102 (1987) 427-.