California, Alameda County Naturalizations - FamilySearch Historical Records

What is in This Collection?
This collection contains images of naturalization records acquired from the county courthouse in Oakland, for the years 1860 to 1970.

What Can These Records Tell Me?
The records may contain the following information:
 * Name of the immigrant
 * Country of birth
 * Arrival date
 * Date of Declaration of Intent or Naturalization
 * Names of witnesses
 * Signature of judge or court official
 * Birth date
 * Birthplace
 * Age
 * Race
 * Last foreign residence
 * Current residence
 * Arrival place
 * Marital status
 * Name of spouse
 * Maiden name of wife
 * Birth date of spouse
 * Residence of spouse

How Do I Search This Collection?
Before searching this collection, it is helpful to know: If you do not know this information, check the 1900 or 1910 census and then calculate the possible year of naturalization based on the date of immigration. The 1920 census may tell you the exact year of immigration or naturalization.
 * The full name of your ancestor
 * The birth date or approximate immigration and naturalization dates

View the Images
View images in this collection by visiting the :
 * 1) Select the  County 
 * 2) Select The  Record Type, Year Range, and Volume Number or Letter  to view the images.

How Do I Analyze the Results?
Compare each result from your search with what you know to determine if there is a match. This may require viewing multiple records or images. Keep track of your research in a research log.

I Found the Person I Was Looking For, What Now?

 * Use the information found in the naturalization record to find a ship manifest
 * Search for vital records, such as marriage and death
 * Use the information found in the record to find additional family members in census records
 * If applicable, search for military records as well

I Can’t Find the Person I’m Looking For, What Now?

 * If your ancestor does not have a common name, collect entries for every person who has the same surname. This list can help you find possible relatives
 * If you cannot locate your ancestor in the locality in which you believe they lived, then try searching other possible localities or ports of entry
 * Try different spellings of your ancestor’s name
 * Remember that sometimes individuals went by nicknames or alternated between using first and middle names, or even initials
 * Look for the Declaration of Intent soon after the immigrant arrived. Then look for the naturalization petition five years later, when the residency requirement would have been met. Look for naturalization records in federal courts, then in state, county, or city courts. An individual may have filed the first and final papers in different courts and sometimes in a different state if the person moved. Immigrants who were younger than 18 when they arrived did not need to file a Declaration of Intent as part of the process

Research Helps
The following articles will help you in your research for your family in the state of California.
 * California Guided Research
 * California Research Tips and Strategies
 * Step-by-Step Research: 1850-1905 | 1905-Present

Citing This Collection
Citations help you keep track of places you have searched and sources you have found. Identifying your sources helps others find the records you used.

California, condado de Alameda, naturalizaciones (Registros históricos de FamilySearch)