Mount Ephraim and Benjamin
45. Theraspis - (Kh. Dayr Isfin ?)
Michael Avi-Yonah (The Madaba Mosaic Map, Jerusalem 1954, 47)
This name does not occur in any other source. The usual identification with the Samaritan Deir 'Ashfin, modern Deir Asfin is difficult. Deir Asfin is situated in the coastal plain whereas Theraspis seems to lie between the mountains.
For more sources and bibliography see:
Tabula Imperii Romani. Iudaea - Palaestina (Jerusalem 1994) s.v. "Theraspis", 249.
Map Section 5 Place Sources