What this record can establish
Migration records can establish arrival, departure, ship, route, nationality, occupation, destination, sponsor or contact person. Coverage varies by port and period, and a passenger list may record intended rather than completed residence. Naturalisation files often contain richer identity evidence but reflect legal statements made at a later date.
How to search without missing people
Build a timeline on both sides of the journey. Search ports, border crossings, alien registrations, naturalisation, passports and departure records with phonetic and translated name forms. Compare companions and destination contacts, and allow for indirect routes, repeat travel or a final destination far from the arrival port.
How to evaluate and cite the result
Cite the creating authority, port, ship, arrival or departure date, list or file number, page or line and repository. Preserve nationality and birthplace exactly as recorded while noting historical boundaries. Require corroboration from census, civil, church or naturalisation evidence before merging a migrant with a same-named person overseas.