Possible Clues:

• Lawrence --, 1912-1990, English novelist, poet and travel writer
• Alexandria Quartet author
• Gerald --, zoologist and writer whose books include 'The Aye-aye and I'
• Author gloomy about sin in retrospect
• Lawrence —, novelist (Alexandria Quartet)
• Perhaps reading or writing about boring, boring writer
• Bishop engaged in contest with liberal naturalist
• In flat, make mistake looking up one or two authors
• You are said to lead right into the valley to find a creator of quartet
• He wrote two thirds of 26