Poor Romans asking for a huge sum of money (1,5,6)
I believe the answer is:
a kings ransom
'a huge sum of money' is the definition.
I know nothing about this answer so I can't judge whether it can be defined by this definition.
'poor romans asking' is the wordplay.
'poor' indicates an anagram.
'romans'+'asking'='romansasking'
'romansasking' with letters rearranged gives 'A KINGS RANSOM'.
'for' is the link.
Can you help me to learn more?
(Other definitions for a kings ransom that I've seen before include "for delivery by Royalists?" , "lots of money" , "Huge amount of money" , "Bomb" , "A very large sum of money" .)