No. A notary watches you sign the lease and then adds a jurat and signs the document attesting you were signing in front of the notary. A witness is not good enough. The jurat - the formal recitation - is to show the intent of the parties to not violate the statute of frauds concerning transactions in real property that cannot be performed in one year or less.
You had a lease for a year, and a month-to-month after that. This is washington law. Hope this helps. Elizabeth Powell
The signing by the landlord should have been in front of a notary. However if after the first year all parties act as if the lease was in effect you will have trouble proving it went month to month after the 12 month.
A notary public is someone appointed by the state to act as a notary. The notary public would have applied a seal to the document. The seal has the name of the notary public, the expiration date of the notary's commission as a notary, and some other information.
If your document has been notarized, the markings on the document should indicate that.
Persons who are not appointed as notaries public and who pretend to be can be criminally charged.