Gregorius is a boy's name and a Latinized form of the Ancient Greek Gregorios, giving it a lengthy history for your little one to fall in love with. The name derives the meanings "watchful," “vigilant,” "alert," and "quick" from grḗgoros, making it a fitting choice for your observant new arrival.

Written around 1190 in rhyming couplets, it tells the story of a child born of the incestuous union of a brother and sister, who is brought up in a monastery, ignorant of his origins, marries his mother, repents of his sins and becomes pope.