Hypothetical scenario: Alan Jones and Peter Piper both live in the United States and are good friends. Alan uses the screen name J7 in a computer account, and a need has developed for Alan Jones to sign a document using the name J7 and acknowledge it before a notary. Alan has no intent to deceive anyone. Peter is well aware of the screen name. Peter is a notary, is not related to Alan, and has no financial interest relating to the document. Alan and Peter both live in a state that allows the use of personal aliases for non-deceitful purposes, and allows notaries to identify signers on the basis of personal knowledge.
So is Peter allowed to take the acknowledgement of J7 and complete a certificate of acknowledgement listing the signer as just "J7"?
"J7" is a personal alias, it is not a name for a business.
The question is inspired by postings on notary forums and blogs where the notaries/authors assert that a person's true legal name is whatever appears on the legally acceptable identification document they present to the notary and the name on the certificate of acknowledgement should exactly match the name on the ID credential, regardless of how the name appears in the document being notarized. The implicit assumption in these postings is usually that the signer and notary are strangers.