This has taken me since lunchtime and now finally I am stuck in the top right-hand side - videlicet:- 3 ac Russian stories of one unknown, one in match (8)?????T??: 11 across 4 in 1 - outsize Pulitzer prize winner spanning 2 continents (3,2,4) O?? ?? U??: 4 down Angst came from ... zone 1, in the German way (5) ????G; 5 down a Shoemaker's "while you sleep" assistant (3) - no letters at all and 7 down Joyce's first novel excellent, second Shaw oddly salvaged (5,5) ????A ?A?E?. They are all interdependent and I am completely bamboozled!!
I have found 11 across(One of Ours) which makes 7 down AILSA something (I think) heyho back to the drawing boaard. I much appreciate the help you have all given me though