Family Tree Affidavit in New York: Filing, Kinship, and Errors

A family tree affidavit in New York is a sworn document filed in Surrogate’s Court that maps the decedent’s relatives — listing each person’s name, relationship, and date of death — so the court can confirm who is legally entitled to inherit. Court rule 22 CRR-NY 207.16 requires it in specific probate and administration situations, most often when heirs claim their share through a relative who has already died, or when only distant or solitary heirs survive. The affidavit has to be signed by a disinterested person, not by someone who stands to inherit, and getting that part wrong is one of the fastest ways to stall an estate.¹

When You Need One and When You Don’t

The rule identifies two situations that call for the affidavit. The first is when a person entitled to notice of the proceeding is a distributee whose relationship to the decedent runs through someone who has already died. In that case the petition must either describe the chain of relationship in full or attach a family tree diagram backed by a sworn affidavit from someone familiar with the family history.¹

The second is when the decedent left only one heir, or when the surviving heirs are more remote relatives — grandparents, aunts, uncles, first cousins, or first cousins once removed. Those cases require both a family tree exhibit and a disinterested person’s affidavit.¹ The more distant the heirs, the more the court needs assurance that 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 straightforward enough to establish without one.¹

What Goes on the Form

The required content is narrower than most families expect. The diagram or table must show the name, relationship, and date of death of every person through whom an heir claims kinship to the decedent.¹ Dates of birth are not required by the rule or by the standard court form, though including them when you know them causes no problem.

The First Judicial District’s form moves through the family in a set order: spouse first, then children, parents, siblings and their children, grandparents, then aunts and uncles and their descendants. You complete only the sections that apply. If nobody exists in a category, you write “None.” If someone’s exact date of death is unknown, you say whether they predeceased or survived the decedent.²

The form also requires a declaration that no other person of the same or closer degree of relationship exists beyond those listed.² That is the sentence that carries the most legal weight, and it is where a false statement can create real trouble.

Who Can Sign It

This is where many families get stuck. The affiant cannot be just any relative. Unless the court permits an exception, the affidavit must come from a disinterested person — someone who knows the family history but has no financial stake in the estate.¹ Anyone who stands to inherit is out.

The restriction tightens when there is a single heir. In that situation, neither the sole heir’s spouse nor the sole heir’s children may serve as the affiant.¹ The concern is straightforward: people with something to gain have reason, sometimes unconsciously, to shade what they say.

In practice, the right person is often a longtime family friend, a neighbor who knew the household for years, or an extended relative who does not inherit under intestacy. Finding someone who both qualifies as disinterested and actually knows the family well enough to swear to the tree can be harder than it sounds, especially for small or isolated families.

Signing and Filing

The affiant must sign in front of a notary public, who administers an oath, affixes a seal, and signs the document. That notarization is what turns a diagram into a sworn legal statement.² New York caps notary fees at $2.00 per act, so the notarization itself is inexpensive.³ Make sure everything is complete before signing; corrections after notarization generally mean drafting a new affidavit.

The family tree affidavit is filed as part of the initial petition for probate or administration, not on its own.¹ Supporting documents like birth certificates, death certificates, marriage records, and obituaries strengthen the submission where they exist, though the rule does not require them as attachments to the affidavit itself. Surrogate’s Court petition filing fees are scaled to estate size, running from $45 for estates under $10,000 up to $1,250 for estates of $500,000 or more.⁴

How Intestacy Shapes the Family Tree

The affidavit does its heaviest work in intestacy cases, where the decedent died without a valid will. New York’s intestacy rules under EPTL 4-1.1 dictate who inherits based on relationship, and the family tree is how the court verifies that map.⁵ The order of distribution under state law runs roughly as follows:

A surviving spouse and children: the spouse receives $50,000 plus half the remaining estate, and the children split the rest.
A spouse and no children: the spouse takes everything.
Children and no spouse: the children split everything equally, with grandchildren stepping into a deceased parent’s share.
No spouse or children: the estate goes to the decedent’s surviving parent or parents.
No spouse, children, or parents: the estate passes to siblings and their descendants.
No closer relatives: the estate is divided between the paternal and maternal sides, going to grandparents or their issue.

Each level appears on the family tree affidavit.⁶ The further down this list the heirs sit, the more detail the court demands, and the more likely a kinship proceeding becomes.

When a Kinship Hearing Follows

A family tree affidavit is a starting point, not always the finish line. When a decedent dies without a will and leaves only remote heirs, the Surrogate’s Court may order a kinship proceeding, which functions as a trial of the family tree where every claimed relationship can be tested.⁷

At a kinship hearing the chart is a guide, but documentary proof is expected for each person on it: birth certificates, baptismal records, marriage records, death certificates, obituaries, and sometimes census records. The claimant has to prove not only their own relationship to the decedent but also that no one of closer kinship exists.

The court appoints a guardian ad litem to represent any distributees whose whereabouts are unknown, and the guardian conducts an independent investigation.⁷ If the tree cannot be fully proven within a reasonable timeframe, the estate funds can be deposited with the New York State Comptroller’s office instead of distributed to the claimed heirs. That is where estates sit for years, and it is the practical reason the initial affidavit needs to be as thorough and accurate as possible.

Fixing Mistakes After Filing

A relative gets omitted. A date of death turns out to be wrong. A previously unknown heir surfaces. When any of that happens, you cannot cross out the original and initial the change. A new affidavit has to be prepared with the corrected information, signed by a qualified disinterested person, and notarized.

Depending on where the case stands, the court may want a motion explaining the reason for the amendment and asking that the revised document be accepted. Catching an error early is far cheaper than fixing it later. Once distribution has begun based on an inaccurate tree, unwinding it becomes expensive and slow.

Consequences of a False Statement

Because the affidavit is sworn, knowingly false information exposes the affiant to perjury charges. At minimum, swearing falsely constitutes perjury in the third degree, a class A misdemeanor carrying up to a year in jail.⁸ If the false statement counts as material testimony, the charge rises to perjury in the first degree, a class D felony punishable by up to seven years in prison.⁹ Deliberately leaving out an heir to redirect an inheritance would almost certainly qualify as material.

Beyond criminal exposure, a false affidavit can void the distribution entirely. The court can reopen the estate and redistribute the assets, an outcome that punishes every honest heir along with the person who lied.

When to Bring in a Lawyer

For a straightforward case — a decedent survived by a spouse and two children, with a clear family structure — the standard court form and a cooperative disinterested witness may be enough. The Surrogate’s Court provides the form and basic instructions at no cost.

The picture changes when the family tree gets complicated: blended families, predeceased children with their own descendants, relatives overseas, or families where nobody qualifies as a disinterested affiant who also knows the tree. An attorney familiar with Surrogate’s Court practice can help identify the right affiant, assemble supporting documents, and steer around the missteps that trigger delays or kinship hearings. If the case is already heading toward a kinship proceeding, legal representation is close to essential; the evidentiary burden is substantial, the guardian ad litem will scrutinize the record, and the one-year clock to prove the family tree puts real pressure on the process.

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. Intestacy – When There Is No Will
6
New York State Senate. New York Estates, Powers and Trusts Law 4-1.1 – Descent and Distribution of a Decedent’s Estate
7
New York State Unified Court System. Guardian Ad Litem Training Manual
8
New York State Senate. New York Penal Law 210.05 – Perjury in the Third Degree
9
New York State Senate. New York Penal Law 210.15 – Perjury in the First Degree