🔼The name Eri in the Bible
Eri is a son of Gad, who is seventh son of Jacob and the first of Zilpah (Genesis 46:16). His progeny would later form a sub-clan within Gad called the ערי; Erites (Numbers 26:16), but Biblically these people were heard from no more. Not that the ethnonym Erites and the name Eri are spelled the same in Hebrew.
🔼Etymology of the name Eri
The name Eri seems to have to do with the verb עור ('ur), meaning to rouse oneself, to awake:
Our name's added letter י (yod) may either create an adjective (such-and-such-like), a possessive form (my such and such), or may be a remnant of יה (Yah) = יהו (Yahu) = יו (Yu), which in turn are abbreviated forms of the Tetragrammaton יהוה, YHWH, or Yahweh.
For a meaning of the name Eri, NOBSE Study Bible Name List appears to go with the adjective and reads Watching. Jones' Dictionary of Old Testament Proper Names sees a remnant of יהוה and reads Watcher Of The Lord. BDB Theological Dictionary does not translate or interpret our name but does list it under the verb עור ('ur), meaning to rouse oneself, to awake.