The 1599 Geneva Bible:

And in the four and twentieth day of the first month, as I was by the side of that great river, even Hiddekel.

The Masoretic text:

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אַחַד הַשָּׂרִים הָרִאשֹׁנִים

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The 1599 Geneva Bible:

One of the chief princes.

Exegetical Theology:

Johannes Cocceius (c. 1669):

[Observata ad Danielem]

One of the chief princes is the first of the princes, the greatest among the princes, ἡ κεφαλὴ πάσης ἀρχῆς. Colossians 2:10. Hence in chapter 12:1, he is called that great Prince. Without doubt, He who in chapter 8:25 is called the Prince of princes.