One who takes after beggarman (5)
I believe the answer is:
thief
This could be a double definition.
'one who' is the first definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'after beggarman' is the second definition.
The definition and answer can be both people as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'takes' acts as a link.
Can you help me to learn more?
(Other definitions for thief that I've seen before include "He takes" , "A robber or pickpocket" , "See 3" , "Unlawful taker" , "Raffles, say" .)