Joshua 15:21 Midrash

וַיִּֽהְי֣וּ הֶעָרִ֗ים מִקְצֵה֙ לְמַטֵּ֣ה בְנֵֽי־יְהוּדָ֔ה אֶל־גְּב֥וּל אֱד֖וֹם בַּנֶּ֑גְבָּה קַבְצְאֵ֥ל וְעֵ֖דֶר וְיָגֽוּר׃

And the cities at the uttermost part of the tribe of the children of Judah toward the border of Edom in the South were Kabzeel, and Eder, and Jagur;