The data entry for all places should be done relative to the present-day location. Even if at that time the city was in a different county, or the county in a different state, enter the present-day location.
List of Changes
In cases where names and boundaries have changed over time, the display of place names will change automatically, based on the list of changes found at Places > Boundary Changes.
On this page are defined the name for a current place, how that place was named at previous times, the start and end dates for these time periods, and a website that documents this change.
This list is not exhaustive, but will be expanded as boundary changes are submitted. New submissions are saved but will not be active until the website administrator reviews and approves it, based on the website link provided. Since each submission relates to the entire website, accuracy is important.
If there are situations that are not yet handled here, email the website administrator with details on these situations, and these will be examined.
The city of Alexandria, Virginia became part of D.C. in 1790, and then returned to Virginia in 1846. Any location defined as "VA, Alexandria" will display like this for event dates before 1790 and after 1846, but between these years, the display and the related color-coding automatically changes to "DC, Alexandria". To highlight this change, an asterix will follow the place name.
Note that when searching by place, the search criteria always uses the place entered into the data, but the search results will show the adjusted place. So with the example above, if you search for "VA, Alexandria", search results may include "DC, Alexandria".