Perhaps from har; mountaineer; Haran, the name of two men -- Haran.
see HEBREW har
הָרָן proper name, masculine (mountaineer; i.e. mountain-people (or land)? compare Di Genesis 11:27); —
1 son of Terah, brother of Abram and father of Lot Genesis 11:27 (twice in verse); 11:31 (all P), 11:28 (J); also father of Milcah (Nahor's wife) & Iscah 11:29 (J).
2 a Levite (Gershonite) 1 Chronicles 23:9. — On הָרָן in
proper name, of a location see below הרם בית, p. 111.