Large sofa with padded arms and back (12)
I believe the answer is:
chesterfield
(Other definitions for chesterfield that I've seen before include "Derby town?" , "Heretics fled (anag) -- Derbyshire town with a crooked church spire" , "He wrote, advising his son" , "Well-padded sofa with two arms and a back" , "Sofa (with crooked spire?)" .)