In Mercer County, the earliest records of naturalization are found under the Clerk of Courts. The first records are found scattered throughout the Minutes of the Common Pleas Court and date from 1814 to 1852. A series of unbound declarations, dated 1838-1839, and a volume of declarations and final papers, dated 1852-1860, complete the set of records issued by the Clear of Courts.

In the second half of the 19th century, naturalization records were issued by the Probate Court. This practice continued until 1906, when the process of naturalization came under federal supervision.

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Submissions from 2022

Abels, John L. - Naturalization Index Record, Mercer County Clerk of Courts

Able, Henry - Naturalization Index Record, Mercer County Clerk of Courts

Addelmeyer, Bernard H. - Naturalization Index Record, Mercer County Clerk of Courts

Adelmeyer, Bernard H. - Naturalization Index Record, Mercer County Clerk of Courts

Aham, Michael - Naturalization Index Record, Mercer County Clerk of Courts

Ahlers, Frederick - Naturalization Index Record, Mercer County Clerk of Courts

Ahlers, John Deederick - Naturalization Index Record, Mercer County Clerk of Courts

Ahlers, John D. - Naturalization Index Record, Mercer County Clerk of Courts

Ahrens, Bernard - Naturalization Index Record, Mercer County Clerk of Courts

Albers, Bernard H. - Naturalization Index Record, Mercer County Clerk of Courts

Albers, Bernard - Naturalization Index Record, Mercer County Clerk of Courts

Albers, Bernard - Naturalization Index Record, Mercer County Clerk of Courts

Albers, Eitert - Naturalization Index Record, Mercer County Clerk of Courts

Albers, Henry J. - Naturalization Index Record, Mercer County Clerk of Courts

Albers, John F. - Naturalization Index Record, Mercer County Clerk of Courts

Albers, John F. - Naturalization Index Record, Mercer County Clerk of Courts

Albin, John Babtest - Naturalization Index Record, Mercer County Clerk of Courts

Albin, John Babtest - Naturalization Index Record, Mercer County Clerk of Courts

Albright, J. G. - Naturalization Index Record, Mercer County Clerk of Courts

Alleman, Henry - Naturalization Index Record, Mercer County Clerk of Courts

Allerman, Henry - Naturalization Index Record, Mercer County Clerk of Courts

Allerman, Henry - Naturalization Index Record, Mercer County Clerk of Courts

Allhoff, George - Naturalization Index Record, Mercer County Clerk of Courts

Alt, Frederick - Naturalization Index Record, Mercer County Clerk of Courts

Althoff, George - Naturalization Index Record, Mercer County Clerk of Courts

Andres, Henry - Naturalization Index Record, Mercer County Clerk of Courts

Ankernan, C. - Naturalization Index Record, Mercer County Clerk of Courts

Appman, Henry - Naturalization Index Record, Mercer County Clerk of Courts

Arnz, Bernard - Naturalization Index Record, Mercer County Clerk of Courts

Athmer, Frederick - Naturalization Index Record, Mercer County Clerk of Courts

Athmer, Frederick - Naturalization Index Record, Mercer County Clerk of Courts

Austerman, Bernhard - Naturalization Index Record, Mercer County Clerk of Courts

Baberler, Bernard - Naturalization Index Record, Mercer County Clerk of Courts

Baberler, Bernard - Naturalization Index Record, Mercer County Clerk of Courts

Backer, Herman Henry - Naturalization Index Record, Mercer County Clerk of Courts

Baker, Ferdinand - Naturalization Index Record, Mercer County Clerk of Courts

Baker, Frederick - Naturalization Index Record, Mercer County Clerk of Courts

Baker, Henry Jr. - Naturalization Index Record, Mercer County Clerk of Courts

Baker, Henry Sr. - Naturalization Index Record, Mercer County Clerk of Courts

Balfs, Conrad - Naturalization Index Record, Mercer County Clerk of Courts

Baltzer, John Antone - Naturalization Index Record, Mercer County Clerk of Courts

Barger, Henry - Naturalization Index Record, Mercer County Clerk of Courts

Barger, Henry - Naturalization Index Record, Mercer County Clerk of Courts

Barhdolt, Phillip - Naturalization Index Record, Mercer County Clerk of Courts

Barhorst, John H. - Naturalization Index Record, Mercer County Clerk of Courts

Barkhurst, John Bernard - Naturalization Index Record, Mercer County Clerk of Courts

Barkman, H. A. - Naturalization Index Record, Mercer County Clerk of Courts

Barney, Adam - Naturalization Index Record, Mercer County Clerk of Courts

Barney, John - Naturalization Index Record, Mercer County Clerk of Courts

Barning, Jacob - Naturalization Index Record, Mercer County Clerk of Courts

Barning, Jacob - Naturalization Index Record, Mercer County Clerk of Courts

Barrington, John - Naturalization Index Record, Mercer County Clerk of Courts

Barrington, William - Naturalization Index Record, Mercer County Clerk of Courts

Barrington, William - Naturalization Index Record, Mercer County Clerk of Courts

Bartels, Francis - Naturalization Index Record, Mercer County Clerk of Courts

Barting, Anthony - Naturalization Index Record, Mercer County Clerk of Courts

Basil, Christian - Naturalization Index Record, Mercer County Clerk of Courts

Bast, Frederick - Naturalization Index Record, Mercer County Clerk of Courts

Battesteder, Jacob J. - Naturalization Index Record, Mercer County Clerk of Courts

Battesteder, Jacob J. - Naturalization Index Record, Mercer County Clerk of Courts

Battian, George - Naturalization Index Record, Mercer County Clerk of Courts

Baumhoff, Bernard - Naturalization Index Record, Mercer County Clerk of Courts

Baunt, Frederick - Naturalization Index Record, Mercer County Clerk of Courts

Beart, Jacob - Naturalization Index Record, Mercer County Clerk of Courts

Beart, Jacob - Naturalization Index Record, Mercer County Clerk of Courts

Bechel, John C. - Naturalization Index Record, Mercer County Clerk of Courts

Beckel, Henry - Naturalization Index Record, Mercer County Clerk of Courts

Becker, Philip - Naturalization Index Record, Mercer County Clerk of Courts

Beckman, George - Naturalization Index Record, Mercer County Clerk of Courts

Beckman, George - Naturalization Index Record, Mercer County Clerk of Courts

Beckman, Herman - Naturalization Index Record, Mercer County Clerk of Courts

Beckman, J. F. - Naturalization Index Record, Mercer County Clerk of Courts

Beckman, John Gerhard - Naturalization Index Record, Mercer County Clerk of Courts

Beckman, John Gerhard - Naturalization Index Record, Mercer County Clerk of Courts

Beckman, John H. - Naturalization Index Record, Mercer County Clerk of Courts

Beckmann, Henry - Naturalization Index Record, Mercer County Clerk of Courts

Beckmann, Herman - Naturalization Index Record, Mercer County Clerk of Courts

Beckmann, Herman - Naturalization Index Record, Mercer County Clerk of Courts

Beckman, William - Naturalization Index Record, Mercer County Clerk of Courts

Beckman, William - Naturalization Index Record, Mercer County Clerk of Courts

Beddinghorst, Deiderick - Naturalization Index Record, Mercer County Clerk of Courts

Beekman, William - Naturalization Index Record, Mercer County Clerk of Courts

Beekman, William - Naturalization Index Record, Mercer County Clerk of Courts

Behrens, Behnarde - Naturalization Index Record, Mercer County Clerk of Courts

Behrens, Bernard - Naturalization Index Record, Mercer County Clerk of Courts

Benne, G. Henry - Naturalization Index Record, Mercer County Clerk of Courts

Benne, Henry - Naturalization Index Record, Mercer County Clerk of Courts

Benne, Henry - Naturalization Index Record, Mercer County Clerk of Courts

Benter, Martin - Naturalization Index Record, Mercer County Clerk of Courts

Bergenbrock, Henry G. - Naturalization Index Record, Mercer County Clerk of Courts

Bergmann, Stephan - Naturalization Index Record, Mercer County Clerk of Courts

Berlin, Christian Frederick - Naturalization Index Record, Mercer County Clerk of Courts

Berner, Christian - Naturalization Index Record, Mercer County Clerk of Courts

Berner, Herman Henry - Naturalization Index Record, Mercer County Clerk of Courts

Berner, William - Naturalization Index Record, Mercer County Clerk of Courts

Bernhard, Francis - Naturalization Index Record, Mercer County Clerk of Courts

Bernholt, Franz - Naturalization Index Record, Mercer County Clerk of Courts

Bial, Charley - Naturalization Index Record, Mercer County Clerk of Courts

Bickel, Henry - Naturalization Index Record, Mercer County Clerk of Courts

Bifsing, Joseph - Naturalization Index Record, Mercer County Clerk of Courts