der Sachse
Saxon
A male resident of, or a person who comes from, the German federal state of Saxony.
Mein neuer Kollege ist Sachse und kommt ursprünglich aus Leipzig.
My new colleague is Saxon and originally comes from Leipzig.

Saxon
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Saxon
A male resident of, or a person who comes from, the German federal state of Saxony.
Mein neuer Kollege ist Sachse und kommt ursprünglich aus Leipzig.
My new colleague is Saxon and originally comes from Leipzig.

'Der Sachse' (the Saxon) is a noun of the N-declension. This means that it always takes the ending '-n' in the accusative, dative, and genitive singular, as well as in the plural.
Ich habe gestern einen Sachsen kennengelernt.
I met a Saxon yesterday.
The word is derived directly from the name of the region 'Sachsen' (Saxony). Many terms for residents are formed this way in German.
Er ist gebürtiger Sachse, lebt aber schon lange in Bayern.
He is a native Saxon, but he has lived in Bavaria for a long time.
The context makes clear which meaning is intended. If people are talking about present-day Germany, federal states, or cities like Dresden, the modern resident is meant. If it is about the Middle Ages or Germanic tribes, the historical Saxon is meant.
Als Sachse liebt er natürlich den Dresdner Stollen.
As a Saxon, he naturally loves Dresden stollen.