loyal — faithful to one's sovereign, government, or state: a loyal subject.
royal — of or relating to a king, queen, or other sovereign: royal power; a royal palace.
royall — Anne Newport, 1769–1854, U.S. writer, newspaper publisher, and reformer.
Three-syllable rhymes
battle royal — a fight, esp with fists or cudgels, involving more than two combatants; melee
rhyme royal — a form of verse introduced into English by Chaucer, consisting of seven-line stanzas of iambic pentameter in which there are three rhymes, the first line rhyming with the third, the second with the fourth and fifth, and the sixth with the seventh.
