[CA] Can a witness sign with their initial and last name?

If a witness signs with an initial and last name rather than the entire first name, which is typed below the signature, would it still be considered valid?
September 24, 2025 15 6

Full Conversation

If a witness signs with an initial and last name rather than the entire first name, which is typed below the signature, would it still be considered valid?

Have you already consulted with a lawyer or legal professional regarding this matter?

No, you are the first!

Is there anything else the lawyer should know before I connect you? Rest assured they’ll be able to help with your signature validity.

However, the identity of the witness could not be disputed.

Richard

Hello. My name is Richard and I have been a licensed attorney for over 25 years, and I hope to be of assistance. Please be advised that this website is for information purposes only, and I cannot formally represent customers of this website or perform actual legal services on your behalf. I know your question is important, and I’m working on typing an answer to your question now.

Sometimes responses and replies take time, and we ask you to be courteous and patient to allow the expert to type your answers to you and also to others.

Richard

What kind of document is it?

The document is a will. The witness signature is the initial in lieu of a first name. The first name is typed underneath.

Richard

What state are you in?

California

Richard

Thank you for that clarification. In California, a will must be signed by the testator and witnessed by at least two competent individuals who are present at the same time, and who also sign the will during that time. There is no specific statutory requirement in the California Probate Code that mandates how a witness must sign—i.e., full name versus initials—so long as the signature reasonably identifies the individual and was made with the intent to witness the document.

If the witness signed as "R. Lastname" and the full typed name appears below the signature, and the identity of the witness is clear and undisputed, the signature is generally considered valid for purposes of attesting to the will. Courts typically look at whether the witness was present, observed the testator sign (or acknowledged the signature), and signed the will with the intent to serve as a witness—not at whether the full first name was included in the signature line.

That said, if this will is going through probate, and there’s any question or challenge, the court may still ask the witness to confirm the signature or identity. However, the abbreviated form of the signature alone would not invalidate the will under California law if the witnessing requirements were otherwise met.

Thank you for easing my concern. The answer is so sensible.

Richard

No problem at all. If you have any follow-up questions, please let me know.

Thank you.

Richard

No problem.