Proving The Last Will Where Multiple Testamentary Documents Exist
April 23, 2026
BY: IAN ANDREW LAW
Some estates do not present a single clean testamentary document. They present a chain: prior wills, codicils, handwritten notes, unsigned drafts, partial amendments, or later writings that may or may not have been intended to alter what came before.
Those files are rarely solved by assuming the latest paper wins.
Key Takeaways
• Multiple testamentary document files require chronology and legal discipline.
• The question is not only which document came last, but what it was legally meant to do.
• Revocation, alteration, republication, and substantial-compliance issues may all arise.
• Drafts and ancillary writings can matter, but not always in the same way.
• These cases usually turn on intention proved through documents and context.
Why These Files Are Different
When there are multiple testamentary documents, the court has to determine the operative document or combination of documents that truly expresses the deceased's last legally effective testamentary intentions. That may involve asking whether a later document revoked an earlier will, altered it, revived it, or failed to do any of those things.
The analysis is legal and chronological at the same time.
What Counsel Needs To Sort Out Early
The sequence of documents matters. So do execution formalities, capacity, custody, lawyer notes, and whether section 21.1 is engaged. A signed codicil is different from an unsigned draft. A holograph alteration is different from an informal instruction email. The documents cannot simply be stacked by date and assumed to be self-explanatory.
The file needs a document map before it needs an argument.
Why These Cases Often Become Rule 75 Cases
Once multiple testamentary writings exist, the estate may move quickly out of routine certificate practice and into directions, proof issues, or a more comprehensive validity dispute. That is because the core question is no longer just whether there is a will. It is what the court should treat as the deceased's last effective will or testamentary direction.
Where multiple documents exist, proving the last will is often really an exercise in proving the final legally effective intention.
Suggested internal links: Wills, Estates & Estate Litigation page, Contact page, When an Unsigned or Imperfect Document May Still Matter in Ontario, Knowledge and Approval: The Quiet Issue That Sinks Wills
Sources
• Succession Law Reform Act, R.S.O. 1990, c. S.26, ss. 6, 15, 16, 17, 18, 19 and 21.1.
• Rules of Civil Procedure, R.R.O. 1990, Reg. 194, rr. 75.01, 75.02 and 75.06.
• Vout v. Hay, 1995 CanLII 105 (SCC).
• White v. White, 2023 ONSC 3740.
This article is for general information purposes only and does not constitute legal advice. Reading this article does not create a solicitor-client relationship. If you require advice specific to your situation, contact my office.