Cyclopedia of Biblical, Theological and Ecclesiastical Literature
(Heb. Muppim', מֻפַּים, perh. contracted from מְעוּפַים in the sense of flights; Sept. Μαμφίμ, v.r. Ο᾿φιμίν and Ο᾿φιμίμ, Vulg. Mophim), a person named in Genesis 46:21 as one of the sons of Benjamin born before the migration into Egypt; but really a grandson born much later, being a son of Becher (q.v.), as it would seem from parallel accounts. (See BENJAMIN). He is doubtless the same elsewhere called SHEPHUPHIAM (1 Chronicles 8:5), SHUPHAM (Numbers 26:30), or SHUPPIM (1 Chronicles 7:12). (See JACOB).
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McClintock, John. Strong, James. Entry for 'Muppim'. Cyclopedia of Biblical, Theological and Ecclesiastical Literature. https://www.studylight.org/encyclopedias/eng/tce/m/muppim.html. Harper & Brothers. New York. 1870.