Help:Categorization Glossary

Search WikiTree's help pages:

Categories: Categorization Help | Glossaries

Language: en | de | fr

Here are some categorization terms and advanced topics. For the basics, see Help:Categorization.


Categorization Project

Adding profiles to categories is fairly easy but working out the proper category names and their hierarchy is really complex. Everyone who uses categories — members from around the world — need to use the same names in order for them to serve their purpose.

The members of the Categorization Project are the ones who undertake this challenge. They're constantly expanding and improving on the category hierarchy and helping other members use the right categories. To get in touch with them, post in G2G using the tag categorization.

If you like to organize things please consider joining. We need your help! See Categorization Project.

Category Page

The page in which category contents are included.

The page includes the Category name, the toolbar, the edit box, links in the upper right:

Limit to Watchlist (limits to profiles in your watchlist included in this category)
How to Categorize (links to Help:Categorization)
Category Search (links to Category search)
WikiTree+ Search (links to WikiTree+ search function)
WikiTree+ Navigate. (links to WikiTree+ navigation function)

There are also links in the lower right to

What links here (pages that link to this profile)
Change history (the history of changes made to category)

High Level Category

A high level category is used to group other categories. It will usually carry a legend that profiles should not be added to the high level category, but rather to a subcategory.

The {{Top Level}} template displays in the following high level notice on the category:

This is a high level category. Please do not add individual profiles. Add profiles to the narrowest category possible. See How to Categorize.

See it at work in this category: Category:Cemeteries

Landing Level Category

A "landing level category" is a category far enough down the category tree that it is expected to contain primarily profiles of individual people rather than being used to group together several narrower categories.

  • Where possible, having just one landing level category common to all languages is preferable to having parallel landing level categories in multiple languages. Where this is not possible, the "landing level category" should be in the dominant language of the category so that profiles belonging to that category are not scattered between the same category in different languages.

In some cases, such as Indonesian Category Conventions you will see the term "Destination Category" used in place of "Landing Level Category." They mean the same thing.

Limit to Watchlist

At the top right of every category page you will see a small link that says "limit to Watchlist." This will show you only the profiles in the category that are also on your Watchlist.

This can be handy for a number of reasons, e.g.:

  • See all your family members who lived in a certain town.
  • See all your ancestors who practiced a given profession or went to a given church.
  • See all the profiles where you need to add sources.

Nesting Categories

When we are referring to a category having a subcategory, we may say that the subcategory is "nested" in the higher category. A subcategory can be nested in any number of higher categories.

Parent Category

A parent category is the higher level category in which a sub-category is nested.

Personal Category

Personal Categories are ones you create and maintain for your own ongoing research. See Personal Categories.

Project Category

The difference between projects, categories, the Categorization Project, and project categories can be a little confusing.

Categories are groups of profiles whereas projects are groups of members.

Projects can have project categories to organize their pages. These categories are a small subset of the category hierarchy.


A subcategory is a category which is linked to a higher level category. All categories in WikiTree (except for Category: Categories) are subcategories of at least one higher level category.

This page was last modified 15:00, 15 October 2021. This page has been accessed 3,432 times.