I presume 13ac is 'articled', but I don't get the 'fourth' bit in the question (Fourth piece of writing for this kind of clerk). Can anyone enlighten me? Ta.
Also, last one left is 23dn - Old man has wages cut, then doubled (4) _A_A
I thought about 'gaga', as in part of 'wages' then doubled, and you get dementia when you're old, but thought there must be something else....