Chemist treated others' epilepsy, following Jenner's lead (6,9)

I believe the answer is:

joseph priestley

'chemist' is the definition.
(18th-century chemist)

'treated others' epilepsy following jenner's lead' is the wordplay.
'treated' indicates an anagram.
'following' says to put letters next to each other.
'lead' suggests taking the first letters.
The initial letter of 'jenners' is 'j'.
'others'+'epilepsy'='othersepilepsy'
'othersepilepsy' with letters rearranged gives 'osephpriestley'.
'osephpriestley' put after 'j' is 'JOSEPH PRIESTLEY'.

I've seen this clue in The Times.

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