| GATHA | In Zoroastrianism, any of the 17 Avestan hymns believed to have been composed by the prophet Zarathushtra (Zoroaster) himself (5) |
| GREENSLEEVES | 16th-century English folk song once thought to have been composed by Henry VIII. (12) |
| JUPITERSYMPHONY | Piece that should have been composed by J.S. Bach? |
| ARISTOTLE | A triolet's been composed by Greek philosopher (9) |
| LEDA | Moon that was discovered in 1974 and named for a woman in Greek myth who was believed to have been the mother (by Zeus, who had seduced her in the form of a swan) of Pollux and of Helen (4) |
| BELISHABEACON | Artist about to live by the prophet, seeing the light by the way |
| ROBERT | - the Bruce; believed to have been born and raised in what was Turnberry Castle, the king of Scots depicted by Chris Pine in the film Outlaw King (6) |
| KRAKATOA | The eruption of which volcanic island in 1883 is believed to have been the loudest noise heard in modern history? (8) |
| SPENTAMAINYU | In Zoroastrianism, the good and creative spirit that is the offspring of Ahura Mazda (6,6) |
| INTIME | Step ___, song and dance number in the 1964 film Mary Poppins, composed by the Sherman Brothers (2,4) |
| URANIUM | Element discovered by Martin Klaproth in pitchblende in 1789 but believed to have been formed in sup |
| ANASTASIA | Daughter of Tsar Nicholas II, believed to have been executed by the Bolsheviks in 1918 (9) |
| LYONNESSE | The mythical birthplace of Sir Tristram, believed to have been submerged by the sea (9) |
| HARRIET | Did you know that the world's largest 1a was believed to have been lain by the British hen ___ in 2010? |
| ICENI | The precious metal items in the Snettisham Hoard are believed to have been produced by this ancient tribe |
| DENISDIDEROT | French writer and philosopher of the Enlightenment, chief editor of the 17-volume Encyclopedie (1745-72) |
| AMOS | In the morning thus taken aback by the prophet (4) |
| AHRIMAN | In Zoroastrianism, the supreme evil spirit and opponent of Ahura Mazda (Ormazd) (7) |
| STANZA | Don't lie endlessly bringing up all the letters composed by the linesman (6) |
| APELLES | Ancient Greek painter described in the elder Pliny's Naturalis Historia who is believed to have been court artist to Alexander the Great (7) |
