Santo
A surname that usually began as a devotional name for someone associated with a saint or a place-name based on a saint.
The #7,224 most common surname in the United States (2010 Census) — about 1 in every 66,828 Americans shares it.
Etymology
Santo comes from Latin sanctus, meaning “holy” or “saint.” In Romance languages it became santo/santo, used both as a religious word and as part of names referring to saints or holy places. As a surname, it most likely arose as a devotional or identifying name connected with a saint, a church, a feast day, or a place called after a saint.
History
The historical excerpts suggest the name was treated in Spanish scholarship as a saint-related term, and related forms like De Santo Claro and Espíritu Santo show how religious language entered surnames and place-names. In Iberian and Italian contexts, Santo can be a shortened form of a fuller devotional surname or a topographic name linked to a church or saint’s cult. In English-speaking countries it is often found among families of Spanish, Italian, or Portuguese background.
Origin
Regions
Variant spellings
Fun fact
In medieval and early modern naming, “Santo” could function less like a family name in the modern sense and more like a public marker of religious devotion or local identity.
From the historical record
“Einstämmige Kürzung Sand-. Sando; Sande — Santo; Saudi. Vklf. (1): Sandel — Sendet, (k): Sandig — Sannig; Sänke — Senteck. (z) Sanzo: Santx — Sentx. Sand a) I. s. Sand b) HI. = Sandfläche , vgl.”
— Die deutschen Familiennamen