🔼The name Ornan in the Bible
There's only one man named Ornan in the Bible, although he is called ארונה (Araunah) throughout 2 Samuel 24, האורנה (Ha'avarnah, or The Araunah) in 2 Samuel 24:16, and ארניה (Araniah) in 2 Samuel 24:18. Throughout 1 Chronicles 21 and in 2 Chronicles 3:1 he is called ארנן (Ornan).
Ornan, the last of the Jebusites mentioned in the Bible, offers his land and threshing floor as a gift to king David, who was instructed by the prophet Gad to build an altar on it (1 Chronicles 21:18). David doesn't want to accept the site as a gift and pays 600 gold shekels for it (although the story in 2 Samuel speaks of 50 shekels of silver — 2 Samuel 24:24).
🔼Etymology of the name Ornan
The name Ornan comes from the root group ארן:
It's not clear where the double נן (nun-nun) of our name comes from. It may be the remnant of the common ון extension, which localizes or personifies the root (see the name Arnon). The name Ornan would thus mean Cedar Man.
For a meaning of the name Ornan, Jones' Dictionary of Old Testament Proper Names reads Large Pine. BDB Theological Dictionary does not translate either version of this name, and doesn't particularly comment on the name Ornan. NOBSE Study Bible Name List entirely omits the name Ornan.