Eran was a grandson of Ephraim and the oldest son of Shuthelah (Numbers 26:36). The Eranite family came from Eran. In 1 Chronicles 7:20, the name Eran does not appear. Instead, the name Eleadah is used in a similar family list. This difference might be because someone made a copying mistake when writing down these records.
Eran
From Tyndale Bible Dictionary, adapted by Mission Mutual. CC BY-SA 4.0.