Easton's Bible Dictionary (1897)
” Here the Egyptians mourned seventy days for Jacob (Gen. 50:4-11). Its site is unknown.
Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
A'BEL-MIZ'RAIM (meadow of Egypt), a name given by the Canaanites to the floor of Atad, where Joseph mourned for his father, Jacob. Gen 50:11. It was "beyond " — that is, west of — the Jordan, as the writer was on the east side. Some place it at Beth-hoglah, or near Jericho; others think it was near Hebron.
Hitchcock's Bible Names (1869)
the mourning of Egyptians