This is an index of naturalizations created by the Butler County Records Center and Archives in Hamilton, Ohio. We have received permission to place the index online. As with all indexes please use this as a guide to the original records which are kept at the Records Center. There should be at least the Petition for Naturalization available for these names. In many cases there will also be the Declaration of Intent. Earlier naturalizations may be only found in the Court of Common Pleas records.
This index was transcribed from an earlier index on 3×5 cards. Some errors have been found and corrected. There may be other errors. Please let us know if you find an error so it can be corrected. Other data that may be found on the index cards, although not in all cases, are names of witnesses, address, birth date, date and port of arrival, finding aids, and remarks which sometimes include names of children.