35 d is incorrect
29d is incorrect
You have to look for the Common Factor
These are authors. Their first names appear .
Their surname is the common factor . It is James and the other unclued lights are books they have written . .
I have seen the light now ,thanks to your ready help, dr b, copelander, minoru and shaneystar2. Everything has fallen into place so neatly! I am getting the hang of the Spectator puzzle which is quite different from most! Thanks again for your elightenment!