Where does “Arriaga” come from?

Arriaga (Spanish) comes from Basque Arriaga, from Basque harri, from Proto-Basque *(h)aRi — stone.

Ancestry of “Arriaga”, step by step

StepLanguageWordMeaning
1BasqueArriagastony place
2Basqueharriglass; rock, stone
3Proto-Basque*(h)aRistone
Every word from Proto-Basque *(h)aRi →Every word from Basque harri →Every word from Basque Arriaga →