From BiblePortal Wikipedia

Smith's Bible Dictionary [1]

Shup'pim. (Serpents). In the genealogy of Benjamin, "Shuppim and Huppim, the children of Ir," are reckoned in  1 Chronicles 7:12. It is the same as Iri , the son of Bela, the son of Benjamin, so that Shuppim was the great-grandson of Benjamin.

Morrish Bible Dictionary [2]

1. Son of Ir, a Benjamite.  1 Chronicles 7:12,15 . Identified with Shupham in  1 Chronicles 7:12 margin.

2. A Levite and one of the gatekeepers.   1 Chronicles 26:16 .

Holman Bible Dictionary [3]

 1 Chronicles 7:12 1 Chronicles 7:15Shupham

Fausset's Bible Dictionary [4]

(See Huppim ; Muppim

Cyclopedia of Biblical, Theological and Ecclesiastical Literature [5]

(Heb. Shuppim', שֻׁפַּ , or [ 1 Chronicles 7:15] שֻׁפַּי ם , prob . Serpents [Gesen.], or a contraction for Shephupham ; Sept. Σαπφίν , v.r. Σαφείμ , Μαμφείν , etc.), the name of two persons.

1. In  1 Chronicles 7:12, "Shuppim and Huppim, the children of Ir," are reckoned among the posterity of Benjamin. B.C. 1856. Ir is, by some, thought to be the same as the son of Bela the son, of Benjamin, and in that case Shuppim would be the great-grandson of Benjamin. In  Numbers 26:39 he and his brother are called Shupham and Hupham, while in  1 Chronicles 8:5 they appear as Shephuphan and Huram, sons of Bela, and in  Genesis 46:21 as Muppim and Huppim, sons of Benjamin. To avoid the difficulty of supposing that Benjamin had a great-grandson at the time he went down to Egypt, lord A. Hervey conjectures that Shuppim, or Shephuphan, was a son of Benjamin, whose family was reckoned with that of Ir, or Iri. But this is arbitrary and unnecessary, as the date is that of Jacob's death. As he is elsewhere ( 1 Chronicles 5:15) similarly mentioned as the brother of Huphan or Huppim, who was a son of Becher and grandson of Benjamin, he must have been such likewise. (See Benjamin); (See Jacob).

2. A Levite of the family either of Kohath or Merari who, together with Hosah, had charge of the Temple gate Shallecheth, in accordance with an arrangement originally instituted by David ( 1 Chronicles 26:16). B.C. 1013.

International Standard Bible Encyclopedia [6]

shup´im ( שׁפּים , shuppı̄m ):

(1) One of the descendants of Benjamin ( 1 Chronicles 7:12 ,  1 Chronicles 7:15 ).

(2) One of the porters in the temple ( 1 Chronicles 26:16 ). See Muppim; Shephupham .