Immigration Records: Tracing Ancestors Across the Atlantic

The Atlantic Crossing

Between the early seventeenth century and the mid-twentieth century, an estimated 60 million Europeans crossed the Atlantic to settle in the Americas. They came from every country in Europe, driven by famine, poverty, religious persecution, political upheaval, and the promise of land and opportunity.

For genealogists, the crossing is often the critical link: the point where a family in the New World connects to a family in the Old. Finding the immigration record -- the document that identifies when an ancestor arrived, on what ship, from what port, and (with luck) from what town or parish -- is frequently the breakthrough that opens an entire European lineage.

The records exist. They are extensive, increasingly digitized, and searchable. But they are also scattered, inconsistent, and sometimes misleading. Understanding what records were kept, by whom, and where they survive is essential for navigating the archival landscape.

Passenger Lists and Ship Manifests

The core immigration record is the passenger list or ship manifest -- the document recording the names of passengers on a particular voyage.

Before 1820, systematic passenger lists for the United States do not exist. Some colonial-era records survive -- the lists of passengers on specific ships, the records of indentured servants, the customs house records of individual ports -- but there is no comprehensive system. For the colonial period, finding an ancestor's voyage often requires working from the destination backward, using land grants, census records, and local records to establish when and where the family first appeared.

From 1820 onward, US customs regulations required ship captains to submit passenger lists to the port collector at the destination. These early lists (1820-1891) typically record name, age, sex, occupation, and country of origin -- but not the specific town or parish, which limits their usefulness for connecting to European records.

From 1893 onward, the lists became dramatically more detailed. New immigration forms asked for last residence, final destination, who paid for the passage, whether the passenger had been in the US before, the name and address of a relative in the country of origin, and the name and address of a relative or friend in the US. These details are genealogical gold.

From 1906 onward, physical descriptions were added: height, complexion, hair color, eye color, distinguishing marks. From 1907, the name of the nearest relative in the country of origin was required -- often the single most valuable piece of information on the form.

Where to Find Passenger Lists

The major collections of US passenger lists are held at the National Archives and Records Administration (NARA) and have been digitized by multiple platforms:

Ancestry.com has the most comprehensive collection, including New York (Castle Garden and Ellis Island), Boston, Philadelphia, Baltimore, New Orleans, San Francisco, and dozens of smaller ports.

FamilySearch.org provides free access to many of the same collections, though indexing may be less complete.

The Ellis Island website (libertyellisfoundation.org) provides searchable access to arrival records for New York Harbor from 1892 to 1957. Approximately 12 million immigrants passed through Ellis Island during this period.

Castle Garden (castlegarden.org) covers New York arrivals from 1820 to 1892, before Ellis Island opened.

For Canadian immigration, Library and Archives Canada provides digitized passenger lists from 1865 onward. For earlier periods, records are scattered across provincial archives.

For departures from the UK, the Board of Trade passenger lists (held at The National Archives, Kew) record outgoing passengers from UK ports from 1890 onward. These are especially valuable because they list the passenger's last address in the UK -- a detail that can connect directly to British parish registers and census records.

Naturalization Records

Naturalization records -- the documents created when an immigrant became a citizen -- are a separate and often overlooked source. In the United States, naturalization was a two-step process: the Declaration of Intention ("first papers") and the Petition for Naturalization ("final papers"). Both documents can contain valuable genealogical information.

Before 1906, naturalization could occur in any court -- federal, state, or local -- and the records are scattered across thousands of courthouses. After 1906, the newly created Bureau of Immigration and Naturalization standardized the forms, which then asked for date and place of birth, date and port of arrival, name of ship, and current address.

NARA holds federal naturalization records. State and local records are often held at county courthouses or state archives. Many have been digitized through Ancestry, FamilySearch, and Fold3.

Passport Applications

US passport applications, from 1795 onward, can contain birth date, birthplace, physical description, and sometimes a photograph. For naturalized citizens, applications include details of immigration and naturalization. Passport applications are held at NARA and have been partially digitized through Ancestry and FamilySearch.

Tips for Successful Searching

Expect name changes. Names were not systematically changed at Ellis Island -- that is a myth. But names were frequently misspelled by clerks, anglicized by the immigrants themselves, or recorded differently from one document to the next. Search for phonetic variants and consider how a name might sound to an English-speaking clerk hearing it for the first time.

Search by family group. Immigrants often traveled with family members, neighbors, or people from the same village. If you cannot find your ancestor by name, search for known associates who may have traveled on the same ship.

Work backward from the destination. If you know where an ancestor settled in the US, census records can tell you their year of immigration and country of origin. Naturalization records can tell you the port, the ship, and the date. Armed with those details, finding the passenger list becomes much easier.

Check departure records as well as arrival records. British departure records (BT 27 at The National Archives) may record a last address that does not appear in any American document. Hamburg emigration lists (1850-1934) are particularly detailed for emigrants passing through that port.

The Atlantic crossing was the defining event in millions of family histories. Finding the record of that crossing -- the name on the manifest, the ship, the date, the port -- is the moment when a family's American story connects to everything that came before.