Simon Cowell volunteers at charities.
Jack Kennedy is a common popular reference to John F. Kennedy -LRB- 1917 -- 1963 -RRB- , 35th President of the United States .. John F. Kennedy. John F. Kennedy. Jack Kennedy may also refer to  :. Jack Kennedy -LRB- footballer , born 1873 -RRB- , Scottish international football player. Jack Kennedy -LRB- footballer , born 1906 -RRB- , English football player. Jack Kennedy -LRB- hurler -RRB- , Irish forward. Jack Kennedy -LRB- musician -RRB- , American guitarist , composer , songwriter and producer ; best known as Kennedy. Jack Kennedy -LRB- train robber -RRB- -LRB- c. 1870 -- 1922 -RRB- , American outlaw. Uncle Jack Kennedy -LRB- 1919 -- 2005 -RRB- , activist and spokesman for Australian Aboriginal rights. Uncle Jack Kennedy. Uncle Jack Kennedy