When the signer of a document cannot write (sign) his/her name, that person may sign the document by mark. In the notary world we call it "signature by mark".
The requirements for notarizing a signature by mark are as follows:
1. The person signing the document by mark must be identified by the California Notary Public by satisfactory evidence.
2. The signer’s mark must be witnessed by two persons who must subscribe their own names as witnesses on the document. One witness should write the person’s name next to the person’s mark and then the witness should sign his or her name as a witness. The witnesses are only verifying that they witnessed the individual make his or her mark on the document. Please see the sample image.
Note: The Notary Public is not required to identify the two persons who witnessed the signing by mark.
Reference: (CA Civil Code Section 14)
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