🔼The name Eliphelehu in the Bible
There's only one man named Eliphelehu in the Bible, although older translations (KJV, Darby, Young) read Elipheleh. Many names that end with יהו (which our name Eliphelehu doesn't) also exist ending with יה. These -yahu names are commonly transliterated into English as -iah names and it seems probable that old-school scholars decided to be consistent with this. Younger translations (NAS, NIV, JSP, ASV) seem to prefer a strict transliteration and speak of Eliphelehu.
The one and only Elipheleh(u) in the Bible was a Levite of the "second rank," a gatekeeper of David's tabernacle (1 Chronicles 15:18) and a musician whose harp was tuned to sheminith (1 Chronicles 15:21).
🔼Etymology of the name Eliphelehu
The name Eliphelehu consists of two elements, the first one being אל (El), the prominent Canaanite deity, whose name became applied to the God of Israel, or the common abbreviation of Elohim, the genus God.
The second part of our name comes from the verb פלה (pala), meaning to distinguish or separate:
These two elements are tied together by the letter י (yod), which may either indicate an active form of the verb (he pala's), or a possessive form (El of).
For a meaning of the name Eliphelehu, NOBSE Study Bible Name List reads Whom God Makes Distinguished. Jones' Dictionary of Old Testament Proper Names proposes God Distinguishes Him. And BDB Theological Dictionary has May God Distinguish Him.