Possible Clues:

• His cast found him elusive
• Dramatist quietly crossing river, and later wooded hollow
• Luigi --, author of the play 'Six Characters in Search of an Author'
• Quiet look around Ireland moved Sicilian dramatist
• Luigi —, Italian playwright
• Italian writer polled unexpectedly about part of Middle East
• Writer returning work describing country valley
• Luigi --, Italian author, winner of Nobel Prize for Literature in 1934
• Luigi --, 1867-1936, Italian author
• Italian playwright