Working With the Claveria Decree List Letter C
The Claveria Decree of 1844 assigned Filipino surnames across alphabetical catalogues. Letter C is one of the more straightforward sections, but it has its own quirks that trip people up if they're not careful. I've spent years digging through these lists for genealogy work, and the C section alone has surnames like Castillo, Cruz, Carlos, Clemente, Cabanillas, and Cojuangco scattered across multiple pages depending on how the original compilers grouped them. Most people look for a single downloadable file, but that doesn't really exist in one clean package. The original catalogue was printed by the Spanish colonial government and survives in several archival formats. The most practical route is the digitized version hosted by the Philippine National Archives or the microfilm copies held at the Ateneo de Manila University library. If you're searching online, the website filipinoheredity.com and the National Historical Commission's digital collections have searchable versions of the C catalogue pages. Here's the thing nobody mentions: the original handwritten lists and the printed versions don't always match. I spent three weeks tracking down a family line because my great-grandmother's surname appeared as "Carcasones" in a baptismal record from 1867 but showed up as "Carcasses" in the printed Claveria catalogue. The original scribe had misread his own handwriting, and the printer just copied the error. I ended up cross-referencing the parish registry directly instead of relying on the catalogue.
The C section runs from roughly page 1 through page 12 of the printed catalogue, containing several hundred surnames. It includes common ones like Castro, Catalino, Cordero, and Concepcion alongside far less common entries like Calumpang and Corcuera. Some surnames appear more than once under slightly different spellings because the compilers drew from regional lists rather than a single unified source.
How the C surnames were actually assigned
The decree itself didn't randomly assign names from a hat. It provided approved lists, and local officials went door to door or worked through parish records to distribute them. In practice, this meant that two families in neighboring towns could receive completely different C surnames even though both were technically following the same decree. A farmer in Laguna might get "Cruz" while a trader in Pampanga nearby got "Castillo" with no connection between the choices beyond what the local administrator decided. There's also a significant gap in the C section. Surnames that already existed before 1844 — particularly among the principalia class — were largely left alone. The decree mainly affected those who didn't have a registered surname yet. So if your ancestor appears with a C surname in a 1850 census but the same family uses a completely different surname in a 1790 record, the Claveria list is probably not the explanation. That's a separate naming change that happened earlier.
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Common mistakes when using the C catalogue
The biggest error I see people make is assuming every C surname in the decree was actually distributed. The catalogue was a menu, not a receipt. Many entries in Letter C were never assigned to anyone outside of a few documented cases. For instance, the surname "Claveria" itself appears in the C section, but it was essentially only given to family members of the governor-general or people he personally favored. Finding it in the list doesn't mean your ancestor received it. Another issue is the spelling variations. The original documents used Spanish orthography, which means C and K were sometimes interchangeable, and double consonants appeared inconsistently. "Catalino," "Catalyno," and "Catallino" could all refer to the same surname entry depending on which priest recorded it. I recommend treating each variant as a separate search term rather than assuming they're identical.
What the C list can't tell you
The decree catalogue doesn't include dates of assignment, the province where a surname was distributed, or any family relationships. It's essentially an alphabetical roll of approved surnames with zero contextual data attached. If you need that information, you're going to need parish records, census documents, or land titles from the specific town and time period you're researching. Also worth noting: the C section includes several surnames that were adopted by Chinese-Filipino families during this period, particularly Co, Cojuangco, and Cheng variants. These were often given to established mestizo traders rather than randomly assigned. If your research involves this population, the Claveria list alone will mislead you about origins and timelines. For the most reliable results with Letter C, I start with the digitised parish records from the specific municipality, then use the Claveria catalogue as a secondary reference point to confirm whether a surname was part of the official distribution. That sequence cuts down the false positive rate significantly compared to starting with the catalogue and working backward.
