re Internment camp see http://www.ee.surrey.ac.uk/Contrib/manx/famhist/genealgy/intern.htm
re life around it Hall Caine wrote a novel Woman of Knockaloe (it also has an alternative title something like Love behind barbed wire that has some local colour of the 1900's
re earlier try plugging knockaloe into my search engine http://www.ee.surrey.ac.uk/Contrib/manx/search.htm