Misc: Which pretender to the English throne was hanged in 1499?

Questions

In 1937 Warren---------- , actor, ladies man, born.?

In 1945 The Soviet Union invaded ---------- during World War II.?

In 1945 Eric---------- , guitarist, singer, born.?

In 1981 Pres. ---------- shot and wounded by John W. Hinckley Jr.?

In 1982 Third Space Shuttle Mission - ---------- returns to Earth.?