Where does “compostelano” come from?

compostelano (Spanish) comes from Spanish -año, from Latin -ānus — Of or pertaining to; -ian.

Ancestry of “compostelano”, step by step

StepLanguageWordMeaning
1Spanish-añoUsed to form form adjectives or nouns derived from Latin
2Latin-ānusOf or pertaining to; -ian
Every word from Latin -ānus →Every word from Spanish -año →