en.wikipedia.org/wiki/Fictitious_defendants

A fictitious defendant is a person that cannot be identified by the plaintiff before a lawsuit is commenced. Commonly this person is identified as "John Doe" or " Jane Doe". ... malpractice case, the plaintiff may have been treated by doctors and nurses he or she may have seen, but did not know the names of at the time.

mentalfloss.com/article/29996/why-are-unidentified-people-called-john-or-jane-doe

From the courts to the morgue, if the government doesn't know someone's name or wants to withhold it, they give them one of these as a placeholder.

www.chicagotribune.com/news/ct-met-john-does-20120221-story.html

Feb 21, 2012 ... Illinois' John and Jane Doe cases marked by clouded memories, ... are a mystery, people commonly known as a Jane or John Doe. ... Taxpayers, hospitals or nursing homes pick up the tab for their care, sometimes for years.

abcnews.go.com/US/dozens-people-live-john-doe-knowing/story?id=17740977

Nov 20, 2012 ... For the John Does walking among us, their lives are mysteries to society and to themselves. ... Benjaman Kyle suffers from retrograde amnesia and has not known his true identity since ... Smiley is now in a nursing home.

gomerblog.com/2017/03/john-doe

Mar 9, 2017 ... An unidentified patient, John Doe, was found down. ... “Yes, yes, my name is in fact John Doe,” the patient formerly known and actually ... Her name is Jane.” ... Physician, Physician Assistant, Nurse Practitioner, Nurse, Other ...

impossiblechoice.org/a-womans-14-year-search-for-her-brother-leads-to-a-john-doe-on-life-support

In the case of a Jane or John Doe, a health care team consisting of ... Ibarra Lara said if the man in the nursing home is her brother, she knows he'll require ...

www.urbandictionary.com/define.php?term=John%20Doe

a general word for a man(see also Jane Doe) ... Get a John Doe mug for your cousin Helena. 2 ... Roblox player 2: I don't know we have to warn everyone!

www.news-press.com/story/news/2016/04/15/lee-memorial-sues-discharge-john-doe-patient/82998642

Apr 15, 2016 ... Let friends in your social network know what you are reading about ... Lee Memorial sues to discharge "John Doe" patient ... or allowing him to transfer to a nursing home nearly a year after doctors cleared him to leave. ... 22, but his guardian – identified in the lawsuit as “Jane Doe,” his mother – refused to ...

www.ldoceonline.com/dictionary/jane-doe

Jane Doe meaning, definition, what is Jane Doe: used especially by the police to ... by the police to refer to a woman whose name is not known → John Doe.