Harry is noble welcoming good person (6)
I believe the answer is:
pester
'harry' is the definition.
(both can mean to bother)
'noble welcoming good person' is the wordplay.
'noble' becomes 'peer' (peers are members of the nobility).
'welcoming' means one lot of letters goes inside another (in sense of 'inviting in').
'good person' becomes 'st' (saint).
'peer' placed around 'st' is 'PESTER'.
'is' acts as a link.
(Other definitions for pester that I've seen before include "Annoy with frequent questions" , "Be a nuisance, annoy with requests" , "Annoy with persistent requests" , "Annoy with frequent requests" , "Bug" .)