Attorney-client privilege does not apply to the identity of the client.

The attorney-client privilege protects any information communicated between an attorney and his/her client.

An attorney-client privilege is a legal doctrine which prevents certain confidential communications between a lawyer and his or her clients.

Attorney-client privilege is a law term. It refers to the right of a lawyer to refuse to give out confidential information that relates to their client in any manner.

I do not know about attorney privilege, but it is probably similar to the situation with social workers and therapists. Confidentiality does not end after the death of a client.