Fellow companion missing the last Chinese dynasty (6)
I believe the answer is:
manchu
'chinese dynasty' is the definition.
(I've seen this in another clue)
'fellow companion missing the last' is the wordplay.
'fellow' becomes 'man' (fellow can mean a man).
'companion' becomes 'ch' (Companion of Honour).
'missing the last' becomes 'u' (I can't justify this - if you can you should give a lot more credence to this answer).
'man'+'ch'+'u'='MANCHU'
Can you help me to learn more?
(Other definitions for manchu that I've seen before include "Last Chinese imperial dynasty" , "Asian language" , "Last imperial dynasty of China" , "old language" , "Seventeenth century conquerors of China" .)