Two pegs Ronald fashioned in identical spirit (12)
I believe the answer is:
doppelganger
'identical spirit' is the definition.
I know nothing about this answer so I cannot tell whether it can be defined by this definition.
'two pegs ronald fashioned' is the wordplay.
'two pegs' means two substitutions for 'peg'.
'fashioned' indicates an anagram.
'peg'+'peg'+'ronald'='pegpegronald'
'pegpegronald' with letters rearranged gives 'DOPPELGANGER'.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for doppelganger that I've seen before include "Living person's double" , "Ghostly double that haunts its living counterpart" , "Ghostly double of a living person - green Lapp god (anag)" , "Spirit double" , "A person's spitting image" .)