In U.S. and Canadian law, there’s a long-established* practice of using “Jane Doe” or “John Doe” to refer to a person whose name is unknown or must be withheld. Placeholder names like these are called kadigans, and it turns out there are legal kadigans for parcels of real property as well. The primary such placeholder name is Blackacre; if two parcels of property are being compared, the second is usually called Whiteacre.
This is where I confess that while I’d known about Jane and John Doe for a long time, I first encountered “Blackacre” less than a week ago, by way of a clever tweet from Kathryn Rubino, an editor at the Above the Law blog.
Blackacre-ish #nameacivillawTVshow— Kathryn Rubino (@Kathryn1) November 2, 2017
(Fans of legal puns can find more like this on Kathryn’s Twitter timeline.)