(1) What is the name of the clause [i.e. "Mr. Bloggs"] used in this sentence, if it is a clause?
The commissioner, Mr. Bloggs, attended the meeting.
Is "Mr. Bloggs" a relative clause adding additional information? Is it a subordinate clause or a qualifying clause? If it is not a clause, what is it called?
(2) I have been having a discussion with a colleague over whether the whole phrase "The commissioner, Mr. Bloggs" comprises the subject of the sentence or whether the subject is just "The commissioner".
Could these points be clarified? All help appreciated.