2168: History exam

Each of twenty-two clues contains a superfluous word. Initial letters of these words spell three specimens of 5; these are represented respectively by 43, 40 and 27 18 in the 13 26D of a person whose surname is an unclued light. Remaining unclued lights combine to form the name by which the 26D is known.
 

Across

 
1    Hamper newspaper covering a solemn case (6)
7    Pressure acceptable in finish (6)
12    Clown, I see, in charge, opposed to citizenship (9)
15    Gods race through illness (9)
16    Senior...