"Albert Anton, Prince of Schwarzburg-Rudolstadt (14 November 1641 in Rudolstadt – 15 December 1710, ibid.) was the ruling Count of Schwarzburg-Rudolstadt from 1662 to 1710. He ...
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was raised to Imperial Prince in 1697, however, he chose not to accept his elevation. In 1710, he was elevated again, and this time, he accepted." - (en.wikipedia.org 12.01.2020)