If you are refering to Edgar Peter Lougheed then yes he is.
No, he is still alive.
Yes
yes
yes
yes
It appears Yes he is still interested in motorcycles.
he is still alive.
No Peter Davison is still alive.
Born 1927 and still alive
No. He died in 1920.
The music of Peter, Paul and Mary still exists. Sadly, Mary Travers died in September 2009.
The artist Peter Griffen presumably lives in Australia, assuming he is still alive of course.