Where is river Nilos?

NEILOS (Nile) was the River-God of Aigyptos (Egypt) in North Africa.

Neilos was the Greek name for the River Nile. The only other north African river known to have been personified by the Greeks was the Khrementes (Chremetes) of western Libya.
www.theoi.com/Potamos/PotamosNeilos.html

Egypt is the English mispronunciation of Aegypt, which was the French mispronunciaton of Aiguptos, which was the Greek mispronunciation of Hut Ka Ptah, which is Egyptian for "resting place of the soul of Ptah". The more ancient name was To Mer, which meant "measured land". SOURCE: Peter Tompkins