Arias
Arias is a surname that can be patronymic in Spanish and Portuguese usage, and in some English-family contexts it was also linked to Arras, the city in northern France.
The #581 most common surname in the United States (2010 Census) — about 1 in every 5,372 Americans shares it.
Etymology
In Iberian usage, Arias is widely treated as a patronymic surname, originally from the medieval personal name Arias, itself an old given name of uncertain deeper origin. The Spanish historical record in the excerpts shows Arias used as a hereditary surname alongside other patronymic forms, which supports this explanation. A separate English explanation found in older surname literature connects Arias with Arras, the town in Artois, as if it meant someone from Arras; that is a different tradition and is not the main explanation for Spanish and Portuguese Arias.
History
The name is especially well known in Spain and Portugal, where it appears in medieval documents and later became a stable family surname. The excerpts also show it in noble and administrative records, indicating long use among Iberian lineages. In English-language surname books, a minority explanation ties it to the French town of Arras, but that seems to describe a different surname history or a separate imported line.
Origin
Regions
Variant spellings
Fun fact
Older Spanish records show Arias alongside many other patronymic surnames ending in -iz or -ez, a reminder that Iberian naming habits were once very fluid.
From the historical record
“London, 10, o; nn^adelpbia, 1. o. AtIb, Arias. — Local, 'ofArras,' a town in Artois famous for the manufacture of tapestry. Not a vulgarism for Harris. itOT. ' Drapa d'Arrai't Will of John”
— A Dictionary of English and Welsh Surnames, with special American instances