| Meaning | "Of the sea" — from Latin marinus / Italian marino; the diminutive suffix -elli places the surname firmly in the Campanian-Abruzzese naming tradition |
| Origin type | Patronymic or topographic surname — either "son of Marino" (the given name) or "one who comes from the sea/coastal area" |
| Language origin | Italian, from Latin marinus; the given name Marino derives from the same root as the English "marine" |
| Regional concentration | Campania (especially Salerno and Naples); Abruzzo; Molise; Puglia; also present in Lazio and the Marche |
| Estimated frequency | Common across central and southern Italy; well-established in Italian-American communities of New York, New Jersey, and Pennsylvania |
| Variants | Marino, Marini, Marinello, Marinucci, De Marino, Di Marino, Marine (anglicised) |
Marinelli is a diminutive form of Marino — the Italian given name and surname derived from the Latin marinus, "of the sea." The Latin root is the same that gives us "marine," "maritime," and the English name "Marina." As a given name, Marino was popularised in Italy by Saint Marinus, the legendarily stonemason-saint from the island of Rab (in what is now Croatia) who, according to tradition, founded the tiny Republic of San Marino on Mount Titano in 301 CE, making it the world's oldest surviving republic. The cult of Saint Marinus spread across Italy, and the given name Marino became common across the peninsula, particularly in coastal and Adriatic communities where the sea-connection made the name feel especially apt.
The diminutive suffix -elli is characteristically central and southern Italian, particularly associated with Campanian, Abruzzese, and Molisan naming conventions. It can indicate a patronymic ("son of Marino") or simply a familial affection — the -elli suffix softens and humanises the base name in the way that English diminutives like -kin or -ling once did. Marinelli as a surname therefore suggests a family that either descended from a notable man named Marino or that acquired the name through long association with the sea in a coastal community.
Marinelli families are concentrated in two main areas: the Campanian coast around the Gulf of Salerno and the Cilento peninsula, and the Abruzzese-Molisan hill country that faces the Adriatic. Both regions have deep historical connections to the sea. The Campanian coastline — the Amalfi Coast, the Sorrentine peninsula, the Cilento — produced fishing communities, merchants, and sailors who carried the sea into their very names. The Abruzzese tradition is slightly different: the Adriatic-facing hills and fishing villages of Chieti, Pescara, and Teramo provinces produced a different but parallel seafaring culture.
The surname appears in the records of the Angevin Kingdom of Naples from the 13th century and in notarial records of the coastal communities around Salerno from the 14th century. Inland Abruzzo and Molise adopted the name through the Marino given name rather than through direct sea association, creating a parallel inland tradition that contributed heavily to American immigration.
Marinelli families arrived in the United States in the period 1880–1920, part of the great Campanian, Abruzzese, and Molisan emigration that transformed American industrial cities. New York received the largest share: the Abruzzese community settled in concentrated patterns in East Harlem, in the Fordham section of the Bronx, and in portions of Brooklyn, while Campanian families clustered in lower Manhattan and South Brooklyn.
New Jersey — particularly the industrial cities of Newark, Trenton, and the Jersey Shore communities — drew Marinelli families from both the coastal and inland traditions. Pennsylvania's mining and steel regions received a significant Abruzzese-Molisan concentration, and Marinelli appears in the payroll and union records of the Lehigh Valley steel companies and the Scranton anthracite mining operations from the 1890s onward.
In the realm of Italian-American music, the name Marinelli became associated with the military band tradition through Giovanni Martinelli (note the variant form) and with the broader tradition of Italian-American brass and woodwind performance that was central to both popular entertainment and ceremonial music in the early 20th century United States.
For Marinelli families, the primary research territories are Campania (particularly Salerno province) and Abruzzo (Chieti, Pescara, Teramo, and L'Aquila provinces). Molise (Campobasso and Isernia) should also be checked, as Molisan emigrants often appear in the same American communities as Abruzzese families. The Portale Antenati provides free access to civil registration records from 1866 for all three regions, with Abruzzo particularly well digitised.
Passenger manifests from Ellis Island will specify the comune of last Italian residence. FamilySearch holds microfilm collections of Campanian, Abruzzese, and Molisan parish records. In US records, Marinelli is generally stable in spelling, though "Marinello" appears occasionally as an alternative. The related forms Marino and Marini should also be searched, as families sometimes used different forms of the base name in different documents.
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