Talk:Alessandro Achillini

WikiProject class rating
This article was automatically assessed because at least one WikiProject had rated the article as stub, and the rating on other projects was brought up to Stub class. BetacommandBot 22:10, 9 November 2007 (UTC)

External links modified
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 * Added archive https://web.archive.org/web/20120324053652/http://hos.ou.edu/galleries//01Ancient/HeroOfAlexandria/1575/ to http://hos.ou.edu/galleries/

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Date of birth
The Dizionario Biografico degli Italiani (online version; I don't know how to access the book if there is one) has October 20. It lists several authorities, although I don't know if they related to the date. Italian WP (and others) also has the 20th, but without a specific reference. Matsen 1974, the main English-language book, and Britannica, have October 29. suggested this could be due to an O.S./N.S. difference, although that is speculation. The Gregorian calendar was introduced in Italy in 1582 (over a hundred years later) but it is true that if you project backwards, the difference in the 15th century would be 9 days. I don't know if doing this retrospective change is at all common. Matsen has a footnote, but I can't see it online. Hence the dodge in the article. David Brooks (talk) 18:48, 1 December 2016 (UTC)