Children initially requiring publisher? (6)
I believe the answer is:
issuer
'publisher?' is the definition.
(I've seen this before)
'children initially requiring' is the wordplay.
'children' becomes 'issue' (issue can mean someone's offspring).
'initially' indicates taking the first letters.
The first letter of 'requiring' is 'r'.
'issue'+'r'='ISSUER'
(Other definitions for issuer that I've seen before include "publishing house?" , "One distributing for use" , "publisher" , "one responsible for 12D [PUBLICATION] ?" .)