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Contributor 220.127.116.11 changed her birth year from 1800 to 1780; likely an undetected piece of date vandalism. There are independent sources that give the (more likely) 1800 date; one gives 1799. David Brooks (talk) 01:35, 27 December 2008 (UTC)
On further search, her monument in Berlin clearly says "23. Juni 1799", although all written material, including a published biography in German, has 1800. Unless there was a year realigment at that time that I wsn't aware of, I'm adding a ? to her year in the article. David Brooks (talk) 01:45, 27 December 2008 (UTC)