Misc: what is the fairytale world of c s lewis's the lion, the witch and the wardrobe?

Questions

Declan macmanus is better known to us as?

Deep purple started their career with which one-word song in 1968?

Deepest from what language is the word mummy derived?

Defeated in a footrace in greek mythology what did atlanta want to do until she was defeated in a footrace?

Defender of the constitution whose headstone reads '..that nothing's so sacred as honor and nothing's so loyal as love'?