Томас Херберт именует его Degardow.
Видимо, это Dih-i-Girdu.
Dergriger / Derguirger:Dih-i-Girdu, localidade iraniana, no caminho entre Ispaão e Xiraz, onde existia um importante caravançarai. – 290, 558, 559.
Le Strange пишет :
Mustawfi mentions Dih Girdu and it appears in the Fars Namah as Dih Gawa (for Jaws), both name signifying "Nut village". The earlier arabic geographers do not mention this name (which is persian in the forms given above), but by its position in the itineraries, modern Dih Girdu must be equivalent to Istakhran of Kudamah and Istakhri.
А что означает арабское название Istakhran?
Kudamah and Istakhri -- это арабские географы?