From an unused root and Yahh (perhaps meaning to deck); Jah has bedecked; Remaljah, an Israelite -- Remaliah.
see HEBREW Yahh
H7425. Remalyahu
רְמַלְיָ֫הוּ proper name, masculine father of Pekah, king of Israrel, ׳בֶּןרֿ 2 Kings 15:25, 27, 30, 32, 37; 16:1, 5; Isaiah 7:1; 2 Chronicles 28:6; contemptuous (מֶּקַח omitted) Isaiah 7:4-5, 9; 8:6 υιὃς Ῥομελίου.