The most common and most likely answer to this crossword clue is the 9 letter word PARKINSON
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More clues leading to the result PARKINSON
- Lawman leaving car briefly with child
- Lawman put pressure on family involved in crime
- Gingerbread’s on cabbage salad as a rule for workers
- Minister accommodating family was worried about learner’s working rule
- Workplan is developed with an opening for serious work assessment?
- Churchman’s relative, a man with a disease named after him
- Lawman‘s family enthralled by member of the clergy
Buddy explains!

The straight part
We know that "a man with a /disease named after him" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case a man with a /disease named after him = parkinson.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.