The Name specification property can be used to specify the type of name, e.g. to discern between name variants, or to state that the person's name is unknown or that the person was unnamed, e.g. in the case of a child that died before it was given a name. It can be a string (e.g. "unknown", "unnamed", "religious name", "stage name", "pen name", "married name" or "birth name") or a reference to a controlled vocabulary.