"For 23andMe customers with Portuguese ancestry, the update most commonly includes matches to the regions of Porto, Minho, and Via Real, as well as Central and Southern Portugal and Madeira. The least common regions for matching are Terceira, Santa Maria and Flores, Corvo, and Graciosa in the Azores. For customers with Spanish ancestry the most common matches will be to Western Andalusia (near Huelva, Seville, and Badajoz), and Southern Andalusia (near Cadiz), as well as to the Canary Islands. The least common regions are Galician and Basque associated regions in northern Spain."