The Commonwealth of the Northern Mariana Islands (CNMI) is a self-governing territory in free association with the United States of America. It comprises 14 of the 15 Mariana group of Islands (excluding Guam) located in the western Pacific Ocean.
As with other U.S. Unincorporated Territories (Puerto Rico, U.S. Virgin Islands, Guam and American Samoa) researching family history in the CNMI can be particularly challenging. Some records are likely lost, destroyed or may reside in various locations spread among the CNMI's different former colonial powers. This article aims to assist the family historian with information, strategies and sources with their CNMI genealogical research. A separate overview article on How To Research Family History In United States Unincorporated Territories provides further, more generalised guidance.
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History of the CNMIHistory of the CNMI
The Northern Mariana Islands were first settled around 1500–1400 BCE by Austronesian seafarers, who were ancient mariners believed to have originated from Taiwan. They used sophisticated canoes and navigation techniques to colonise many places across the Pacific and Indian Oceans[1]. In the Northern Marianas the Austronesian seafarers became the Chamorro (also known as Chamoru) people, developing their own distinctive culture. This is known as Latte-Stone, because of the use of stone pillars with hemispherical caps for the foundations for traditional homes and important structures[2].
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Spanish contact began in 1521 with the Spanish navigator Magellan. Spain formally colonised the archipelago in 1668, imposing Catholic missions, warfare, forced relocations and a raft of social and economic policies. Over time Spanish rule devastated the Chamorro people, reducing their population from hundreds to ten of thousands[3]. A new influx of people occurred in the 19th century after destructive typhoons made islands in central Caroline Islands of Micronesia uninhabitable. Eventually the original culture and traditions of these Carolinian migrants blended with those of the Chamorro.
In 1899, after the Spanish–American War, Spain sold the Northern Marianas to Germany, which developed extensive copra plantations. The island of Saipan became the administrative centre for the colony. Japan took control of the Northern Marianas during World War I under a League of Nations mandate. Over the next two decades Japan heavily militarised the islands. U.S. forces captured Saipan and nearby islands in 1944 after prolonged and bloody battles. Following World War II, the Northern Marianas became part of the U.N. Trust Territory under U.S. administration. In 1978 the Islands became a self-governing, unincorporated U.S. territory in political union with the United States and operating under its own constitution and legislature. In 1986 CNMI residents became U.S. citizens. They cannot vote in presidential elections but do elect a non-voting representative to the U.S. Congress[4].
Popular CNMI surnames and their meaningsPopular CNMI surnames and their meanings
The CNMI shares most of their common surnames with Chamorro families of Guam[5]. These largely reflect Spanish naming practices.
CNMI naming data and Chamorro surname studies list the following as the most common surnames in the Islands:
- Sablan: Multiple possible origins, primarily linked to Spanish influences in Guam/Marianas and linked to geographic features such as savannah/grassland.
- Camacho: This name is probably Spanish/Portuguese origin. It likely started as a nickname from an old word meaning "twisted" or "bent" (from the Celtic camb), describing someone with a physical trait like bow legs. It may also be linked to specific geographic features (thickets/bushes) or occupational roles (making straps).
- Manglona: The exact linguistic root within the Chamorro society is unclear. However similar names, like Mangloa in the Philippines, suggest potential links to specific medicinal trees or local geographic features.
- Cabrera: One who takes care of goats, a goat herder. Derived from the Latin caprarius (goat).
- Castro: Of Spanish origin, castle.
- Reyes: Someone connected in some way with the king’s household; a Spanish variant of Ray.
Other frequently[6] listed CNMI surnames include:
- Cruz: Dweller at, or near, a cross. From the latin crux (cross).
- San Nicolas: Spanish version of Saint Nicholas, a popular 4th-century bishop.
- Santos: Derived from the latin sanctus (a holy one or a sacred place).
- Guerrero: One who engaged in combat, a warrior. From the Spanish guerra (fight).
- Torres: Latin origin turris (towers). Common in Spanish, Portuguese, and Catalan regions suggesting a topographic name for someone living near a tower or castle.
- Taitano: Believed to derive from an old Chamorro word meaning "to be strong or brave".
Prominent People of CNMI origin or associated with the CMNIProminent People of CNMI origin or associated with the CMNI
- Gregorio “Killi Sablan: first (and long‑serving) non‑voting delegate of the CNMI to the U.S. House of Representatives.
- Ramona Villagomez Manglona: chief judge of the U.S. District Court for the Northern Mariana Islands.
- Joe Wang Miller, and Lucas Paul Knecht: members of the CNMI national soccer team who have received regional recognition.
- Angi Uezu: Saipan‑born Isshin‑ryu karate grandmaster and head of a major Okinawan karate organisation.
- Elizabeth Diaz Rechebei: Northern Mariana Islander academic. One of the first Chamorro women to receive a graduate education, she went on to hold several educational leadership roles on the islands.
- Carol Young Suh Lee: Northern Mariana Islander-born American tennis player.
See alsoSee also
Explore more about researching Family History associated with the CMNIExplore more about researching Family History associated with the CMNI
Researching family history associated with the CNMI usually requires combining local CMNI civil and church records with Chamorro/Carolinian focused and more general U.S. territorial genealogical sources. For some historical records spanning the periods of Spanish and German colonial rule even more diverse sources may contain information of value if the family historian has the patience and/or access to specialist knowledge to locate them. Also important is to collate and record as much information as possible about names and locations associated the individuals. This will help you match people in fragmented records and navigate surname shifts that may occur after baptism and colonisation.
For general research on the CNMI you can start with MyHeritage, which offers around almost 15 million U.S. records spread across around 3,600 individual collections.
For more specific CNMI records or sources of information here are some online guides and indexes to consult:
- FamilySearch Northern Mariana Islands Genealogy is a good starting point. This site provides information on each of the CNMI islands, municipalities, languages, and what record types exist. It contains links to specific record sets.
- Cyndi’s List section for Northern Mariana Islands points to a curated set of CNMI genealogical links including Birth, Marriage, Death (Vital) records, CNMI history, and local CNMI genealogical projects.
- Website of the CDC National Center for Health Statistics includes a page devoted to the Northern Mariana Islands. This provides detailed information of how to obtain CNMI records for Birth, Death, Marriage and Divorce.
- Individual CNMI Catholic parish registers may contain vital records, especially covering pre‑WWII period. Unfortunately many of these older church records were damaged or destroyed during conflicts or natural disasters, such as typhoons, so coverage is incomplete. If you know the specific parish and time-period associated with the person of interest you could try contacting local parishes or the diocesan archive to ask about available books or microfilms containing genealogical records. Visit the official website for the Diocese of Chalan Kanoa (RCDCK) to find details, locations, and contact information for CNMI Catholic parishes.
- Because CNMI ancestry is deeply tied to Chamorro and Carolinian communities you can also consult their specific community family history projects. For example the Chamoru Roots Genealogy Project documents thousands of Chamorro bloodlines from across the Mariana Islands, with a strong historical and surname‑change commentary. Articles from this project and related blogs describe how Christian names replaced Indigenous given names, how old personal names became surnames, and why pre‑1800 lines can be hard to follow except for high-born or other well documented families[7].
- A dedicated researcher, Bob Jenkins, has created and curates a very useful The Northern Mariana Islands Genealogy website. It provides links to biographies, cemeteries, obituaries, military lists and other compiled family history resources specific to the CNMI and to Guam.
References
- ↑ Wikimedia Foundation. (2025, December 6). Northern mariana islands. Wikipedia.
- ↑ Pereda, N. (2025, October 16). Latte. Guampedia.
- ↑ Northern mariana islands - US territory, Pacific Islands, Wwii | britannica. (n.d.)
- ↑ History and politics of the C.N.M.I. CNMI Board of Professional Licensing /. (2023, August 11).
- ↑ Most common Northern Marianan Surnames & Meanings. (n.d.-a).
- ↑ Organization. (2025, November 15). Northern Marianan surnames - most common family names from Northern Mariana Islands. ✅ 2025. surnam.es.
- ↑ Paleric. (n.d.). The first Chamolinians. THE FIRST CHAMOLINIANS. [1]