'House of David' in the Bible

Then Solomon made Pharaoh's daughter come up from the town of David to the house which he had made for her; for he said, I will not have my wife living in the house of David, king of Israel, because those places where the ark of the Lord has come are holy.

And by the doorway of the fountain and straight in front of them, they went up by the steps of the town of David, at the slope up of the wall, over the house of David, as far as the water-doorway to the east.