OneGreatFamily Visit Site

Pros / This site consistently evaluates sources for accuracy to avoid duplicates and incorrect reports.

Cons / Material in the database depends on what members contribute. Any extra information has to come from an external link on the website.

 Verdict / This website is great for genealogists who enjoy reporting their connections and linking families together, using a community of active users for research.

OneGreatFamily sets out to help you find your family history both in the United States and overseas. The website’s main goal is to reconstruct the family tree of the whole planet. This family history search differs in structure from many other ancestry websites like it, because it works as a cooperative research project rather than a genealogy search engine.

You can benefit from the research of other OneGreatFamily users and contribute your own findings for the rest of the online community. The combined effort on this website weaves together family trees from different corners of the world to create one large, interconnected tree, or one great family.

Each time someone enters new information, OneGreatFamily runs through a list of qualifications. It checks for whether the new information already exists in the database, its usefulness to users, and whether there is any conflicting information. All of this cross-checking makes OneGreatFamily a reliable source for research. You can enter the research you’ve already collected about your family to have the site validate your information and know that the sources you find on the site are reliable.

OneGreatFamily isn’t the best site for finding piles of records about your ancestry, but it can help you find verified information about your family and connections to others. To make up for OneGreatFamily’s lack of on-page resources, you can connect to widely used resources like the Canadian Genealogy Center, AfriGeneas and Find A Grave by using the genealogy search engine. However, other, less helpful resources may also be listed among the search results. When we used this feature, we found that PeopleFinders and PeopleSmart were among the search results. Though records can be collected from these sites, they typically are used to search for living individuals or conduct background checks rather than as genealogy sources.

OneGreatFamily’s tools section provides resources outside the site database for your genealogy search. This section includes the surname index. It lists alphabetized last names where you can start your family search. Once you find the surname you’re looking for, you can see the number of matches within the site’s database. You can find data on how frequent your surname is through history and how often it appears in the U.S. Census. This makes OneGreatFamily a good source for leads on last names.

  • Countries Documented
  1. The number of countries represented in a genealogy search engine.
    More is Better
  2. 6  OneGreatFamily
  3. 200.0
  4. 200.0
  5. 134.0
  6. Category Average


The data on OneGreatFamily has to pass validation and cross-checking before you can use it, making this a reliable database for genealogy sources. The information pool is small and based only on what users submit and build on the website, though. So while you’ll find reliable sources, there won’t be many extraordinary finds compared to the best genealogy search sites.

OneGreatFamily Visit Site