My 6 D has an 'e' in the middle and it's in Chambers.
I didn't get the 'o' and the 'h' but I think the 'h' has to come from 38 D (as I've used 36 D ( a 't') and there doesn't seem to be anything in 37 D).
Apologies to those of you without the crossword - it is very thematic and there's a long preamble, so it wouldn't be easy to explain.