Smith’s Bible Dictionary
“Pathros” means region of the south
Pathros: a part of Egypt, and a Mizraite tribe whose people were called Pathrusim. In the list of the Mizraites the Pathrusim occur after the Naphtuhim and before the Caluhim; the latter being followed by the notice of the Philistines and by the Caphtorim. (Genesis 10:13,14; 1 Chronicles 1:12) Pathros is mentioned in the prophecies of Isaiah, (Isaiah 11:11) Jeremiah (Jeremiah 44:1,15) and Ezekiel. (Ezekiel 29:14; 30:13-18) It was probably part or all of upper Egypt, and we may trace its name in the Pathyrite name, in which Thebes was situated.