APOLLO.  Latin form of Greek Apollon (q.v.), meaning "destroyer."  This name also appears in a French Arthurian romance in prose, as an ancestor of Tristan.

... In the French Romance Histoire de Tristan de Léonnois, is given a long account of Tristan's ancestors, commencing with Bron, the brother of Joseph of Arimathea and custodian of the Holy Graal.  Bron's grandson, Apollo by name, is born in Cornwall, where his mother, a Babylonian Princess, has sought an asylum.  Thanor, the King of that country, being warned by a sage that the infant is destined to work him ill, exposes it in a wood.  Apollo is, however, rescued and brought up in secret by a peasant woman.  He afterwards becomes a celebrated knight, known by the title of "the Adventurous," and lives to fulfil the prophecy of the sage by killing the King... (On the Legend of Tristan, Leith, 1868)

    Apollo.  The sun, the god of music.  (Roman mythology)
    "Apollo's angry, and the heavens themselves
    Do strike at my injustice."
            —Shakespeare: Winter's Tale, iii. 2.
    A perfect Apollo.  A model of manly beauty, referring to the Apollo Belvidere (q.v.)
    The Apollo of Portugal.  Luis Camoëns, author of the Lusiad; so called, not for his beauty, but for his poetry.  He was god of poetry in Portugal, but was allowed to die in the streets of Lisbon like a dog, literally of starvation.  Our own Otway suffered a similar fate. (1527-1579).
    Apollo Belvidere [Bel-ve-dear].  A marble statue, supposed to be from the chisel of the Greek sculptor Calamis, who flourished in the fifth ante-Christian era.  It represents the god holding a bow in his left hand, and is called Belvidere from the Belvidere Gallery of the Vatican, in Rome, where it stands.  It was discovered in 1503, amidst the ruins of Antium, and was purchased by Pope Julius II. (Dictionary of Phrase and Fable, Brewer, 1905)