useless trivia: What Word Means: An Ancient British Ethnic Group?

Questions

Genesis:"Fading Lights" was written about the death of this rock guitarist's son.?

Genesis:_The Lamb Lies Down On Broadway_ is actually a story about this character.?

Genesis:Name the Album: Get 'Em Out By Friday, Horizons, Watcher of the Skies?

Genesis:Name the Album: I Know What I Like (In Your Wardrobe), Battle of Epping Forest?

Genesis:The video for this song included many puppets from a popular British TV show?