The Joachim Nestor Hohenzollern reference article from the English Wikipedia on 24-Apr-2004
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Joachim Nestor Hohenzollern

Joachim I Nestor Hohenzollern (1484 - 1535) was an elector of Brandenburg, acceded 1499.

His father was John or Johann Cicero, born 1455.

Joachim I was married to Elizabeth Oldenburg.