1. A Stanford Announcement in 2011: Tomorrow, April 23, is William Shakespeare‘s birthday. It’s also William Wordsworth‘s birthday, and Vladimir Nabokov‘s birthday, and Alexander Pushkin‘s birthday – and St. George’s Day, to boot. It’s also the 8th annual “A Company of Authors” celebration at the Stanford Humanities Center...

3. Gerard De Vries,Donald Barton Johnson,Liana Ashenden "St. George's feast day is April 23, which is Nabokov's birthday. In many of his books, Nabokov's presence can be noticed in many different disguises and St. George as his representative is discerned as well as Pnin and Spring in Fialta...

4. John Burt Foster: "contrast between the grotesquely sexualized memento of the natural scene and Victor's careful description of Mount Saint George as he remembers it. ...Hence Victor's lyrical tribute to Mount Saint George at the beginning of Spring in Fialta can function as an undisputed given..

5. Julian Connolly: ".Elsewhere I suggested that Nabokov's mention of Jan Van Eyck's materpiece intricately alludes to Nabokov's autorial presence in the novel. We may recall that the painting contains the image of, as Nabokov put it, "a super,rigged up as St. George" (Pnin,154, ch6), in whose armor a reflection of the artist can be seen. In this context, van Eyck's self-portrait as a reflection in the armor of St.George also implies the authorial presence by way of birthday, since Nabokov celebrated his birthday on St. George's Day (April 23). In addition, van Eyck's self-representation could also draw Nabokov's attention as it appears on the side (na boku) of St.George's armor. Further, by mentioning van Eyck's painging, Nabokov implies his own authorial presence both chromesthetically and anagrammatically: van Eyck's vermilion had and hose and a dark blue mantle in the image that is reflected in St. George's armor, could also attract Nabokov, since "V" and "S," the initials of his first name, Vladimir, and of his pen-name, Sirin, belong, in the writer's chromesthetic system, as I have already mentioned above, to the red and blue groups, while the Russian rendition of the color combination, red-and-blue, krasna-sinii, anagrammatically suggest Sirin."
Setting his myriad faces in his text : Complex Encoding p; 29- Nabokov and His Fiction: New Perspectives, 1999 - books.google.com.br/books?isbn=0521632838...

...........................................................................................................................................................

*From Wiki: Saint George's Day is the feast day of Saint George. It is celebrated by various Christian churches and by the several nations, kingdoms, countries, and cities of which Saint George is the patron saint. Saint George's Day is celebrated on 23 April, the traditionally accepted date of Saint George's death in AD 303. For Eastern Orthodox Churches which use the Julian calendar, 23 April corresponds to 6 May on the Gregorian calendar. As Easter often falls close to Saint George's Day, the church celebration of the feast may be moved from 23 April. In England and Catalonia, where it is observed as a solemn feast, for 2011 and 2014 the Anglican and Catholic calendars celebrate Saint George's Day on the first Monday after Easter Week (2 May and 28 April, respectively).[1][2][3] Similarly, the Eastern Orthodox celebration of the feast moves accordingly to the first Monday after Easter or, as it is sometimes called, to the Monday of Bright Week.