Tobias Scheunchen (eds.), "Ḥalwān - حلوان " in The Beth Qaṭraye Gazetteer last modified January 10, 2020, https://bqgazetteer.bethmardutho.org/place/5294
  
    
      
        
          Ḥalwān
          حلوان
          
          A city (madīna) in Egypt.
          
            حلوان كورة بالعراق ومدينة بمصر وقرية بنيسابور واخرى بقوهستان
          
                    
                        29.84144 31.30084
                    
          https://bqgazetteer.bethmardutho.org/place/5294
          http://syriaca.org/place/5294
          http://www.geonames.org/355795/halwan.html
          
            Aḥsan al-taqāsīm fī maʿrifat al-aqālīm
                        Muḥammad ibn Aḥmad Maqdisī
                        
            25
          
                    
                        http://www.geonames.org/355795/halwan.htmlGeoNames Marc Wick