Use stream of consciousness to answer the following. Castellanos is a Spanish habitational surname with the meaning "(from a place founded or inhabited by) Castilians". Notable people with the surname include:\n\nAnswer this question based on the passage: where does the last name castellanos originate from?
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The relevant information is: Castellanos is a Spanish habitational surname with the meaning "(from a place founded or inhabited by) Castilians". Final answer: Spanish.
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