Here are some early period Saints days you might want to plan your next event around:
January 17 | St. Anthony (250-350) | Egyptian, founder of monasticism | January 20 | St. Sebatian (?-288) | Patron against the plague | March 1 | St. David or Dew (?-544) | Patron saint of Wales. During a battle against the Saxons, St. David had the Britons wear leeks on their hats to identify themselves. | April 23 | St. George (?-303) | Patron saint of England | May 28 | St. Augustine (?-604) | Roman monk, first Archbishop of Canterbury | June 5 | St. Boniface (680?-755) | English monk in Germany | June 9 | St. Columba (?-597) | Patron saint of the homesick | July 29 | St. Olaf (died in battle 1030) | Norway's patron saint | August 28 | St. Augustine (354-430) | Bishop of Hippo, known for his "Confessions" | November 11 | St. Martin (315-399) | Patron of reformed drunks. Fair weather at this time is called "St. Martin's summer". This was also the time when the first new wines of the year were tasted. | November 13 | St. Nicholas (800?-867?) | Caused a schism between Roman and Byzantine churches | December 6 | St. Nicholas (?-342) | Patron saint of Russia, young people and sailors | December 26 | St. Stephen (?-33) | The first Christian martyr. Stephen was stoned to death. |
Editor's note: One of the most important saints is missing from this list. She was St. Fuiltigherne (6th century), Irish, and her saint's day is March 14th or thereabouts. Honest! I don't know what she was patron saint of, but it was probably something obscure.