Araunah was the owner of the threshing floor, which David bought to offer a sacrifice in 2 Samuel 24.

2 Samuel 24:21. And Araunah said, Why has my lord the king come to his servant? And David said, To buy your threshing floor, to build an altar to the LORD*, so the plague may be stayed from the people. 22. And Araunah said to David, Let my lord the king take and offer up what seems good to him. Behold, here are oxen for the burnt offering and threshing instruments and the harness of the oxen for wood. 23. And Araunah gave all these things to the king. And Araunah said to the king, The LORD* your God will accept you. 24. And the king said to Araunah, No, but I shall surely buy it of you at a price. Neither will I offer burnt offerings to the LORD* my God of that which does not cost me anything. So David bought the threshing floor and the oxen for fifty shekels of silver. 25. And David built an altar there to the LORD*, and offered burnt offerings and peace offerings. So the LORD* prepared the land and the plague was stayed from Israel.