Where does “Tuscaloosan” come from?

Tuscaloosan (English) comes from English -án, from Middle English -an.

Ancestry of “Tuscaloosan”, step by step

StepLanguageWordMeaning
1English-ánOf or pertaining to;. Often added to words of Latin origin, but also used with words of other origins. When a word ends in a
2Middle English-an—
Every word from Middle English -an →Every word from English -án →