Welsh courtier departed in bad odour (4,5)
I believe the answer is:
owen tudor
'welsh courtier' is the definition.
I know nothing about this answer so I can't judge whether it can be defined by this definition.
'departed in bad odour' is the wordplay.
'departed' becomes 'went' (I've seen this before**).
'in' means one lot of letters goes inside another.
'bad' is an anagram indicator.
'odour' anagrammed gives 'oudor'.
'went' going inside 'oudor' is 'OWEN TUDOR'.
Can you help me to learn more?
(Another definition for owen tudor that I've seen is " Welsh ancestor of royal family".)