Journal of a father and a childless person (5)
I believe the answer is:
paper
'journal' is the definition.
(I've seen this before)
'father and a childless person' is the wordplay.
'father' becomes 'pa' (pa can mean dad or father).
'and' means one lot of letters go next to another.
'a childless person' becomes 'per' (abbreviation. I am not sure about the 'childless' bit.).
'pa'+'per'='PAPER'
'of a' is the link.
Can you help me to learn more?
(Other definitions for paper that I've seen before include "Journal" , "Short essay" , "conference presentation" , "Material made from wood pulp, say" , "Thin material used for writing, wrapping etc" .)