Family Tree Affidavit in New York: Filing and Corrections

A family tree affidavit in New York is a sworn statement, filed with the Surrogate’s Court as part of a probate or administration petition, that lists the decedent’s relatives — their names, relationships, and dates of death — so the court can confirm who is legally entitled to inherit. Court rule 22 NYCRR 207.16 requires it in specific situations, and it has to be signed by someone who knows the family but has no financial stake in the estate.¹ Get the wrong signer or leave someone off, and the estate can stall for months.

When You Need a Family Tree Affidavit

Two situations trigger the requirement. The first is when any person entitled to notice of the proceeding is an heir whose relationship to the decedent runs through someone who has already died. In that case, the petition must either describe the chain of relationships directly or attach a family tree diagram supported by a sworn affidavit from someone who knows the family history.¹

The second is when the surviving heirs are either a single person or more distant relatives: grandparents, aunts, uncles, first cousins, or first cousins once removed. The court demands extra proof in those cases, including a family tree exhibit and a disinterested person’s affidavit.¹ The further out the heirs sit on the tree, the more the court wants to be sure no closer relative was missed.

If the decedent’s only heir is a surviving spouse or an only child, no family tree diagram is needed. The relationship is simple enough to establish without one.¹

What the Affidavit Has to Show

The required content is narrower than people often assume. The diagram or table must show the name, relationship, and date of death of each person through whom an heir claims connection to the decedent.¹ Dates of birth aren’t required by the rule, though adding them when you know them doesn’t hurt.

The standard court form for the First Judicial District walks through the family in order: spouse, then children, then parents, then siblings and their children, then grandparents, then aunts and uncles and their descendants. Fill in only the categories that apply. If no one exists in a category, write “None.” If you don’t know an exact date of death, indicate whether the person died before or after the decedent.²

The form also requires the affiant to declare that no other person of the same or closer degree of relationship to the decedent exists beyond those listed.² That is the sentence that does the real legal work, and the one where a false statement carries the most risk.

Who Can Sign It

This is where many families get stuck. The affidavit cannot be signed by just any relative. Unless the court permits otherwise, the affiant must be a disinterested person — someone who knows the family history but takes nothing from the estate.¹ Anyone who stands to inherit is disqualified.

The rule tightens when the decedent left only one heir. In that case, the sole heir’s spouse and the sole heir’s children are also barred from signing.¹ The court’s concern is straightforward: people with a financial interest have reasons to shade the truth, even unconsciously.

In practice, the right signer is often a longtime family friend, a neighbor who knew the household for years, or an extended relative who doesn’t inherit under New York’s intestacy rules. Finding someone who both qualifies as disinterested and actually knows the family tree well enough to swear to it can be surprisingly hard, especially for small or isolated families.

Notarization

The affiant signs in front of a notary public, who administers an oath, affixes a seal, and signs the document. That notarization turns the diagram into a sworn legal statement.² New York law caps notary fees at $2.00 per notarial act, so the cost is minimal.³ Make sure the affidavit is fully complete before signing. Corrections after notarization generally mean preparing and notarizing a new document.

Filing With Surrogate’s Court

The family tree affidavit is not a standalone filing. It goes in with the petition for probate or administration and the rest of the supporting paperwork.¹ Attaching birth certificates, death certificates, marriage records, or obituaries when you have them strengthens the submission, though the court rule does not list these as mandatory attachments to the affidavit itself.

Surrogate’s Court filing fees run with the gross value of the estate, from $45 for estates under $10,000 up to $1,250 for estates of $500,000 or more. Those fees cover the petition, not the affidavit separately.⁴

What Happens If the Court Isn’t Satisfied

A well-prepared affidavit often ends the inquiry. When heirs are remote and the family tree is thin or hard to verify, though, the Surrogate’s Court can require a full kinship proceeding — a hearing where the family tree is treated as something to be proven, with documentary evidence expected for every person listed.⁵

In that proceeding, the claimant has to prove both the claimed relationship to the decedent and that no closer relative exists. The court can appoint a guardian ad litem to represent any heirs whose whereabouts are unknown, and that guardian investigates independently.⁵ If the family tree cannot be fully proven, the estate funds may end up deposited with the New York State Comptroller rather than distributed. That is the outcome a thorough initial affidavit is meant to prevent.

Fixing an Affidavit That Turns Out Wrong

If a relative was omitted, a date of death turns out to be wrong, or a previously unknown heir surfaces, you cannot just cross out and correct the original. A new affidavit has to be prepared with the updated information, signed by a qualified disinterested person, and notarized again.

Depending on where the case is, the court may want a motion explaining why the amendment is needed and asking the court to accept the revised document. Catching the error early is far easier than fixing it later. Once distribution has started based on a bad family tree, unwinding it gets expensive.

Penalties for False Statements

Because the affidavit is sworn, knowingly putting false information in it exposes the signer to perjury charges. At a minimum, swearing falsely is perjury in the third degree, a class A misdemeanor punishable by up to one year in jail.⁶

If the false statement is material to the proceeding, the charge becomes perjury in the first degree, a class D felony carrying up to seven years in prison.⁷ Deliberately leaving an heir off to redirect an inheritance would almost certainly qualify as material. A false affidavit can also void the distribution, forcing the court to reopen the estate and redistribute assets, which hurts every legitimate heir, not just the person who lied.

When to Bring in a Lawyer

For a decedent survived by a spouse and children with a straightforward family structure, the standard court form and a willing disinterested witness are often enough. The Surrogate’s Court provides the form and basic instructions at no cost.

The picture changes with blended families, predeceased children who left their own descendants, relatives abroad, or situations where no one who qualifies as disinterested actually knows the family well. A Surrogate’s Court attorney can help identify an appropriate affiant, gather the supporting records, and avoid the procedural errors that invite delay. If a kinship proceeding looks likely, legal representation is close to essential: the evidentiary burden is substantial, the guardian ad litem will scrutinize the submissions, and the pressure to prove the tree within the court’s timeframe is real.

1
New York Codes, Rules and Regulations. 22 CRR-NY 207.16 – Petitions for Probate and Administration; Proof of Distribution; Family Tree
2
New York State Unified Court System. Surrogate’s Court – Family Tree Affidavit
3
New York State Senate. New York Executive Law 136 – Notarial Fees
4
New York State Unified Court System. Surrogate’s Court Fee Schedule
5
New York State Unified Court System. Guardian Ad Litem Training Manual
6
New York State Senate. New York Penal Law 210.05 – Perjury in the Third Degree
7
New York State Senate. New York Penal Law 210.15 – Perjury in the First Degree