Original: In 1596, it was raised to the status of capital of one of the dynasty's splintered Saxon-Thuringian territories, the new Duchy of Saxe-Coburg under the leadership of Duke Johann Casimirs (ruled 1596 â "1633).
Simplified: In 1596, it became the capital of one of the new Duchy of Saxe-Coburg under the leadership of Duke Johann Casimirs (ruled 1596-1633).