Geoffrey Chaucer,
Chaucer's Works (ed. Skeat) Vol…
(1900)
“ The 'royal beast' means the king of beasts, the lion, and (here in particular) the sign of the zodiac named Leo. This sign, on March 15, in Chaucer's time, and in the latitude of London, began to 'ascend,' or rise above the horizon, just about noon. An additional reason for calling Leo 'royal' is because the principal star in the constellation is called Regulus in Latin, Βασιλίσκος in Greek, and Melikhi in Arabic, all epithets signifying kingly or royal. ”
