Díez
A Spanish surname originally marking descent, often explained as “son of Diego.”
The #9,293 most common surname in the United States (2010 Census) — about 1 in every 88,163 Americans shares it.
Etymology
Díez is generally treated as a Spanish patronymic surname, formed from an older genitive-type ending meaning “of” or “belonging to” a male ancestor. In Iberian usage it is commonly connected with Diego, so the sense is usually given as “son of Diego” or “descendant of Diego.” Some older writers discussed wider Teutonic or Gothic influences on the ending, but the surname is best understood within Spanish patronymic naming.
History
The surname is long established in Spain and the Spanish-speaking world, where patronymics became fixed hereditary surnames over time. Nineteenth-century scholars also compared it with other surnames ending in -ez/-es, like Fernández and Méndez, as part of a broader Iberian naming pattern. In modern records the accent is often omitted, giving Diez.
Origin
Regions
Variant spellings
Fun fact
The same surname pattern seen in Díez also appears in many of the most common Spanish surnames, including Fernández and González.
From the historical record
“[see under Theodoric in Diet.] DIEZ I C^^"") '^'™' fornis of Dietricjh, q.v. DITTMAR (Ger.) People or Mightily Famous [O.H.Ger. diot(a, nation, people (see Theed in Diet.) -1- mdri, famous, &c.] DORE (Fr.) Golden [see Doree in Diet.] DREYFUS "I (Ger.) Trivet, Tripod [Ger. DRE\FUSSj dreifuss; f. O.H.Ger. drt, three”
— Surnames of the United Kingdom: a concise etymological dictionary (2 vols in 1)