Old Woman youthful chap in 50s married (5)
I believe the answer is:
mated
'married' is the definition.
('mated' can be similar in meaning to 'married')
'old woman youthful chap' is the wordplay.
'old woman' becomes 'ma' (I've seen this in other clues).
'youthful chap' becomes 'ted' (I am not sure about the 'youthful' bit.**).
'ma'+'ted'='MATED'
'in 50s' acts as a link.
This may not be correct. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for mated that I've seen before include "Joined, connected" , "given match" , "had sex" , "Defeated in game" .)