'Royal' in the Bible

“And concerning the royal house of the king of Judah [you shall say], ‘Hear the word of the Lord,

“Is this man [King] Coniah a despised, broken jar?Is he a vessel in which no one takes pleasure?Why are he and his [royal] descendants hurled outAnd cast into a land which they do not know or understand?

Now in the seventh month Ishmael the son of Nethaniah, the son of Elishama, of the royal family [of David] and one of the princes of the king, came [at the instigation of the Ammonites] with ten men to Gedaliah the son of Ahikam in Mizpah. As they were eating a meal together there in Mizpah,

and say to them, ‘Thus says the Lord of hosts, the God of Israel, “Behold, I am going to send and get Nebuchadnezzar the king of Babylon, My servant, and I am going to set his throne over these stones that I have hidden; and his [majestic, royal] canopy will be spread over them.