CAMERON COUNTY, TX HISTORY AND LOOKUP
County History Books
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Cameron County, Texas: A Genealogical Overview
As the southernmost county in Texas, Cameron County is the anchor of the Rio Grande Valley and a region with a history far predating its inclusion in the United States. Its identity is a rich blend of Spanish colonial, Mexican national, and American traditions, forged in the crucible of international conflict and cross-cultural exchange. For genealogists, Cameron County offers a unique research experience where records can be found in Spanish and English, and family ties frequently cross the international border. It is a place where Texas history, U.S. history, and Mexican history converge.
I. County Formation and Evolution
Cameron County’s origins lie in the disputed territory between Texas and Mexico, and its own boundaries were once vast, covering much of the Rio Grande Valley.
- 1848: County Formed: Cameron County was officially established on February 12, 1848, shortly after the end of the Mexican-American War.
- Parent County: It was formed from the territory of Nueces County. However, the entire region was part of the state of Tamaulipas, Mexico, prior to the Texas Revolution and the Mexican-American War. Mexico considered the Nueces River its border, making the land between the Nueces and the Rio Grande a disputed zone. Early land records consist of Spanish and Mexican land grants, which are essential for pre-1848 research.
- Subsequent Formations: The original Cameron County was massive. Its territory was later used to form or contribute to several other counties:
- Starr County (1848)
- Hidalgo County (1852)
- Willacy County (1911)
- Name Origin: The county was named for Captain Ewen Cameron, a Scottish-born hero of the Texas Revolution who was captured and executed during the ill-fated Mier Expedition into Mexico in 1843.
- County Seat History: Santa Rita was the temporary county seat in 1848. Later that year, the seat was moved to the newly established city of Brownsville, which has remained the county seat ever since. Brownsville was founded opposite the historic Mexican city of Matamoros, Tamaulipas.
II. Settlement and Early History
- Early Inhabitants: The area was home to various bands of Coahuiltecan-speaking indigenous peoples.
- Spanish Colonial and Mexican Periods: In the mid-18th century, José de Escandón led a major colonization effort, establishing towns and large cattle ranches (porciones) along the Rio Grande under the authority of the Spanish crown. These ranches, granted to founding families, formed the basis of the region’s society and economy for a century.
- Key Historical Events:
- The Mexican-American War (1846-1848): The war began in Cameron County. The construction of Fort Texas (later Fort Brown) on the Rio Grande, directly across from Matamoros, was seen as an invasion by Mexico. The first major battles of the war, the Battle of Palo Alto and the Battle of Resaca de la Palma, were fought here in May 1846.
- The Cortina Wars (1859-1876): A series of armed conflicts led by local rancher Juan Nepomuceno Cortina against Anglo authorities, highlighting deep tensions over land ownership and civil rights in the decades after the U.S. annexation.
- The Civil War: Brownsville was a critical Confederate port. By shipping cotton across the river to neutral Matamoros, Mexico, the Confederacy could bypass the Union naval blockade and export its goods to Europe. The last land battle of the Civil War, the Battle of Palmito Ranch, was fought in Cameron County on May 12-13, 1865, more than a month after General Robert E. Lee’s surrender.
- The “Magic Valley” Transformation: The arrival of the railroad in 1904 and the introduction of large-scale irrigation in the early 20th century transformed the region from a ranching frontier into a highly productive agricultural area known for its citrus, vegetables, and cotton.
III. Genealogical Records and Resources
Research in Cameron County requires familiarity with both American and Mexican record types, and often, the Spanish language.
- County Courthouse: The Cameron County Courthouse, 964 E. Harrison St., Brownsville, TX 78520, is the central repository for records since 1848.
- County Clerk: This is the most important office for genealogists. It holds vital records (birth, marriage, death), and crucially, all land records (deeds). This office maintains records and maps of the original Spanish and Mexican land grants that are foundational to local property research.
- District Clerk: Holds civil and criminal court case files, including divorce decrees and naturalization records.
- Vital Records:
- Birth and Death Records: Statewide registration began in 1903. The County Clerk’s office holds these records from 1903 to the present.
- Marriage Records: Held by the County Clerk, with records dating from 1848. For marriages before this date, Catholic church records are the only reliable source.
- Church Records: Extremely important. The region has been overwhelmingly Roman Catholic for centuries. Church records of baptisms, marriages, and burials are often the only source of vital information predating 1848 and are generally more complete than civil records for the latter half of the 19th century. The Archives of the Diocese of Brownsville and historic parishes such as the Immaculate Conception Cathedral are essential. Many families have records in the archives of the Diocese of Matamoros, Mexico.
- Libraries and Societies:
- Brownsville Public Library System: Offers a local history and genealogy collection.
- The University of Texas Rio Grande Valley (UTRGV): The university library’s Special Collections and Archives are a major repository for historical documents, photographs, and oral histories of the region.
- Tip-O-Texas Genealogical Society: A local society for family history researchers.
- Brownsville Historical Association & Museum.
- Bordering Jurisdictions:
- Willacy County, TX (north)
- Hidalgo County, TX (west)
- Gulf of Mexico (east)
- The State of Tamaulipas, Mexico (south, across the Rio Grande)