Brunswick County (Va.) Naturalization Records, 1808-1921, consists of loose naturalization records filed in the local court, 1808-1902, and a standardized volume of naturalization records issued by the federal government, 1907-1921.

Loose naturalization records, 1808-1902, may include affidavits, reports for naturalization, declarations of intent to become United States citizens, and notices of application for admission of citizenship. The reports are narrative accounts made by applicants summarizing their journey to the United States. The declarations of intent record the person's name, place of birth, age, country of previous citizenship, renunciation of allegiance and fidelity to the nation of which the person is currently a citizen, and the date the intention was sworn. Affidavits, signed by those who knew the applicant and could vouch for their loyalty to the United States, may also be filed with the reports and declarations.

Standardized volumes of naturalization records consists of Department of Commerce and Labor, Division of Naturalization, Declaration of Intention, 1907-1921. There were two primary types of naturalization volumes issued by the federal government: Declaration of Intention volumes and Petition volumes. Oftentimes, applicants were documented in both of these volume types within a locality, but that is not always the case. An applicant may have entered their declaration of intention in one locality before moving and completing their naturalization petition elsewhere.

Declaration of Intention volumes record declarations of intent to become United States citizens. Information on the declaration of intent includes a person's name, age, occupation, color, complexion, height in feet and inches, weight, color of hair, color of eyes, other visible distinctive marks, place and date of birth, current residence, place from where emigrated to the United States, vessel arrived on, last foreign residence, a renunciation of allegiance and fidelity to the state of which the person is currently a citizen, and the date the intention was sworn.

Petition volumes, often called Petition and Record, record the petitions for naturalization, oaths of allegiance, and orders of court admitting petitioner to United States citizenship. Not all parts may be completed as all stages of the citizenship process could be completed in different courts and in different locations in the United States.

A petition for naturalization contains the petitioner's name, address, occupation, birthdate and place, place where emigrated from and date and port of arrival in the U.S., name of ship on which emigrated, where declared intention to become a citizen, spouse's name, place of birth and address, and number of children with their names, birth dates and places of birth. Additional recorded information includes a renunciation of allegiance and fidelity to the state of which the person is currently a citizen or subject, a statement that the petitioner can speak English, and the date since the petitioner has resided constantly in the U.S. An affidavit of witness to these facts is signed by two persons.

For many petitions, a declaration of intent and occasionally other correspondence or related documentation is inserted into the volume facing the naturalization petition. Also sometimes included is an order of the court admitting the petitioner to United States citizenship that includes date of citizenship and certificate of naturalization number.

Inserted into the volumes at various points were correspondence and regulations from the United States Department of Labor's Bureau of Naturalization.