You find a census record from 1910. You trace a surname back to a village in County Clare. You discover a great-grandmother who immigrated alone at seventeen, and suddenly you understand something about your own stubbornness. The instinct, almost immediately, is to share it.
That instinct is good.
Sharing family history is one of the most generous things a person can do. But the internet has made it very easy to share things that belong to other people, including living relatives who never agreed to be part of your research project, and the dead who carried secrets for a reason.
Online genealogy has a real ethics problem, and most people who love the hobby have never sat down to think it through. These five rules are a practical framework for doing this work in a way that honors both the history you are uncovering and the people still living inside it.
Rule 1: Never Post Information About Living People Without Their Consent
This is the rule that covers everything else. If someone is alive, their personal information belongs to them, and sharing it publicly on a family tree, a genealogy forum, or a heritage blog is a violation of that ownership even if it is technically accessible somewhere else.
The specific data points that matter most are the ones that identity thieves and bad actors need to do real damage. Full legal name, date of birth, place of birth, current address, maiden name, and current photographs are the core offenders. Each of those pieces of information is relatively harmless in isolation. Together, they become a profile that can be used to open credit accounts, steal an identity, or locate someone who does not want to be found.
The standard practice among responsible genealogists is to mark all living individuals as "private" on any platform that allows public sharing. On Ancestry, FamilySearch, MyHeritage, and most other major tools, this is a built-in option. Use it. If the platform does not offer it, that platform is not the right place to store that information publicly.
The harder version of this rule involves people who are estranged from the family, or who have deliberately left their past behind. A relative who changed their name and moved away has made a choice about their identity. Someone who cut off contact with a parent decades ago has reasons for that. Your family tree research does not override those choices. Before you add them to a public tree or mention them in a blog post, ask yourself whether they would want to be found this way. When in doubt, leave them out.
Rule 2: Treat Sensitive Historical Stories With the Same Care You Would Give Secrets Told in Confidence
A lot of the most compelling genealogy discoveries involve things that were deliberately hidden. Adoptions that were never discussed. Children born outside of marriage and raised under a different name. Relatives who were institutionalized. People who changed their ethnicity on official documents to escape discrimination or violence. Suicides listed as accidents. Criminal records. Mental illness that the family referred to in hushed terms, if at all.
These stories feel significant because they are significant. They explain things. They fill in gaps. The temptation to document them and share them is completely understandable.
But there are people still alive who are shaped by these histories, and they may not know them. A person who was adopted as an infant and raised not knowing that fact deserves to hear it from a family member, in private, not to stumble across it in a public tree built by a third cousin they have never met. A woman whose father had a criminal record that was never discussed may have her own reasons for keeping that chapter closed, even if she is aware of it.
The test worth applying here is something like this: who would be hurt if this information became public, and have I thought seriously about whether my desire to document it is more important than that potential harm? For historical figures who lived centuries ago, the calculation is usually simple. For people who died in living memory, or whose children and grandchildren are still alive, it requires real consideration.
There is no universal answer. Sometimes the right choice is to document something privately, in a locked tree or a personal archive, and let the family decide collectively whether and when it gets shared more broadly. Sometimes it means having a direct conversation with the people most affected before you publish anything. Rarely, it means deciding not to publish at all.
Rule 3: Understand That DNA Results Are Not Just About You
When you submit a DNA sample to 23andMe, AncestryDNA, MyHeritage, or any other consumer genetics company, you are not just sharing your own genetic data. You are contributing to a database that can be used to identify your biological relatives, including people who never consented to be in that database and may not even know you exist.
This has already had dramatic real-world consequences. DNA databases have been used by law enforcement to identify suspects through the DNA of their relatives. The Golden State Killer was caught this way. So have dozens of other individuals. Whether you think that is a good use of the technology or not, the point is that your DNA submission has implications for people other than yourself, and those people did not make that choice.
Within families, the more immediate concern is unexpected discovery. DNA testing regularly reveals non-paternity events, where a person's biological father is not the man who raised them. It surfaces adoptions that were kept secret. It connects people to half-siblings they did not know existed, sometimes because of sperm donation, sometimes because of affairs, sometimes because of coerced sex. These discoveries happen without warning, and they can be profoundly destabilizing.
Before you share your DNA results publicly, or before you reach out to a DNA match who may not know what they are about to learn, slow down. Think about what that message might mean on the other end. Think about whether you are equipped to handle the conversation that might follow. And if you are the person who has just received a disorienting result, consider talking to a genetic counselor before you start pulling threads that could unravel someone else's understanding of their own life.
Rule 4: Cite Your Sources, and Be Honest About What You Actually Know
Genealogy errors spread fast. An unsourced guess gets entered into a public tree. Someone finds it, assumes it is verified, and copies it into their own tree. That gets copied again. Within a few years, a piece of fiction has become "documented" family history in a dozen separate places online.
This is not a minor inconvenience. False genealogical information can lead people to believe they have a heritage they do not have. It can cause people to test for genetic diseases based on a falsely attributed ancestor. It can disrupt legal processes around inheritance and citizenship. And once misinformation is embedded across multiple databases, it is nearly impossible to correct.
The responsible approach is to cite every claim. If you found a birth date on a census record, say so. If you are inferring a date of death from when a person stopped appearing in records, say that too. If you are relying on a family story that has never been verified, mark it as family tradition, not confirmed fact. If something in your tree is a hypothesis, label it as one.
There is no shame in uncertainty in genealogy research. The historical record is incomplete by nature, and the best genealogists are the ones who are most honest about the gaps in what they know. The shame is in presenting guesses as certainties and letting those certainties propagate.
When you share family stories in narrative form, whether on a blog, in a family history book, or on a platform like Memoracy, the same principle applies. Say where a story came from. Acknowledge when you are filling in the emotional texture of a scene that you were not present for. Give readers the tools to evaluate what they are reading, and resist the urge to smooth over uncertainty in the name of a better story.
Rule 5: Ask Before You Share Stories That Belong to Someone Else
Family stories are not individually owned. A story about your grandmother belongs to you, to your parents, to your aunts and uncles, to your cousins, and potentially to people you have never met. The fact that you are the one who decided to write it down does not mean you have the unilateral right to put it on the internet.
This matters most when the story reflects poorly on someone, involves a private struggle, or touches on something the family has historically treated as sensitive. But it also matters for stories that are simply personal. Your uncle's immigration story is his story. Your aunt's experience of losing a child is her experience. Your cousin's complicated relationship with religion is their relationship. Your desire to document the family history does not automatically license you to broadcast those things without asking.
The practical rule is simple: for stories involving living people, ask them directly before you publish. Show them what you have written. Give them the chance to correct factual errors, to ask that certain details be omitted, or to opt out of being included entirely. This conversation is sometimes uncomfortable, but it is part of doing the work ethically.
For stories involving people who have died, the calculation shifts. The dead cannot consent, and at some point their stories become part of the broader human record. But if their children are alive, and if the story is one they might find painful or sensitive, a courtesy conversation is still worth having. Not because you are required to change what you write, but because families are long and your research is part of a relationship, not a solo project.
A Final Thought on Why This Matters
The reason genealogy has exploded as a hobby is not really about dates and records. It is about the human need to understand where you come from, to feel connected to people who came before you, and to leave something behind that explains who you were and how you got there.
That impulse is beautiful. The stories that come out of serious genealogy research can be genuinely moving, and sharing them widely can strengthen families across generations and across distances.
But the same stories that are healing to share can be harmful when shared carelessly. The family secret that needed to stay private for fifty years might still need to stay private. The living relative who has built a life independent of the family might have very good reasons for the distance. The DNA match who appears in your results might not be ready to learn what that match implies.
Ethical genealogy research does not mean refusing to document difficult things. It means being honest about what you know and what you are guessing, protecting the people who have not consented to be part of your public project, and handling the weight of other people's stories with the same care you would want extended to your own.
The stories that feel most dangerous to share are often the ones that matter the most. The question is whether you have earned the right to tell them.
Sign up and start your first story on Memoracy today.
