History Trivia - Battle of Lepanto - Ottoman navy routed

October 7

 336 Pope Saint Mark (Marcus) died of natural causes, ending his reign as Catholic Pope which lasted under a year. He is credited with the foundation of the Basilica of San Marco in Rome, and a cemetery church over the Catacomb of Balbina, just outside the city. 

1571 The Holy League of the Papal States, Spain and Venice routed the Ottoman navy at the Battle of Lepanto. This was the defining battle of the crusades between the Christian nations on the Mediterranean and the Muslim Turks where the outnumbered Christians were victorious.

History Trivia - Danish astronomer Tycho Brahe observes the Nova Cassiopeiae

November 11

308 At Carnuntum, Emperor emeritus Diocletian conferred with Galerius, Augustus of the East, and Maximianus, the recently returned former Augustus of the West, in an attempt to restore order to the Roman Empire.

 887 Asser began Instructing King Alfred. The Welsh monk who taught and counseled the King, became his friend and biographer, and began teaching him Latin on St. Martin's Day. Alfred went on to translate the work of Boethius into English.

1050  Henry IV was born.  He was King of Germany 1056-1106, who tried to depose Pope Gregory VII, and had to stand barefoot in the snow for three days before Gregory would pardon him, although Henry got his revenge later.

1215 The Fourth Lateran Council met and defined the doctrine of transubstantiation, the process by which bread and wine are transformed into the body and blood of Christ.

1417 Martin V Elected Pope. Elected unanimously during the Council of Constance, Martin was faced with the enormous task of restoring the Western church, the Papal States, and the papacy itself.

1499 Pretender to the British throne Perkin Warbeck was executed.

1572 Tycho's Nova. Danish astronomer Tycho Brahe observed the Nova Cassiopeiae and, although other observers claimed to have spotted it earlier, his precise measurements revealed it was a distant phenomenon and that changes could occur among stars.