Patronymically from Tachan; a Tachanite (collectively) or descendants of Tachan -- Tahanites.
see HEBREW Tachan
H8471. Tachpanches
or Techaphneches תַּחְמַּנְחֵס proper name, of a location Egyptain city Jeremiah 43:7-8, 9; 44:1; 46:14, so 2:16 Qr (Kt תחפנס); = תְּחַפְנְחֵס Ezekiel 30:18; Ταφνα(ι)ς [Ταφναι]; identification with Greek Daphnae, modern Tel Defenneh, approximately 18 miles east-southeast from Tanis, approximately 9 miles west of El-†an‰ara, BädEgypt. 5th ed. (1902), 169 PetrieDefenneh (Tanis II), 1888.