music: 60's Chart Toppers: Name The Artist: Calcutta?

Questions

Which English king was murdered at Berkeley Castle by the insertion of a red hot poker so that no external marks would be visible?

Which group had top ten hits with Dancing Party, I wonder why and A little bit of soap?

What was the the Flying Hamburger?

Which element has the atomic no 1?

Who had hits with Homeward Bound, I am a Rock and The Boxer?