Here are the possible solutions for elizabeth knighted him in '59 for services to the arts clue
Answer
Clue
Relevancy
alec
Clue
Elizabeth knighted him in '59 for "services to the arts"
Definition
a herring
neko
Clue
Rocker Case who tweeted "If a dude called me a 'cougar' I'd be more likely to kill him bare-handed and shit him out in front of his parents than fuck him"
noel
Clue
Coward knighted by Queen Elizabeth
Definition
a Christmas carol
padre
Clue
Leader of services in the services
Definition
(Italian) father; a title given to priests; an army chaplain