I'm not entirely sure of my solution, because it looks like the last 3 words straddle the final letter of the person in the central unclued column.
However, I haven't got the source material, so I can't check the quote - and there might be a French pun involved (if so, it will be beyond my language skills).
I have a slightly different set of letters too (I make these - COSVUT) and the final 3 words I have breaks down like this -
?L?? DE ?O?GEO? (this ignores the E central to the bottom line - the 4th letter in your chain). It's something to do with Burgundy wines.
I'm happy to provide the name in full, if you'd prefer.