New Brunswick Naturalization and Citizenship
Until 1947 British immigrants from England, Scotland, Wales, and Ireland automatically became citizens of Canada. They did not need naturalization. Non-British immigrants, however, were required to make oaths of allegiance before receiving land grants. Files containing these oaths and petitions for citizenship covering the years 1817 to 1846 for New Brunswick are found at the Provincial Archives.
Records created after 1917 are more detailed than earlier records and are found at:
Department of Citizenship and Immigration
Public Rights Administration
300 Slater Street, 3rd floor, section D
Ottawa, ON K1A 1L1
Telephone: 888-242-2100 (in Canada only; outside of Canada, write to the above address)