Artist introduced to relatives in the heart of Huguenot country (7)
I believe the answer is:
ukraine
'country' is the definition.
(I've seen this before)
'artist introduced to relatives in the heart of huguenot' is the wordplay.
'artist' becomes 'ra' (Royal Academician, member of Royal Academy of Arts).
'introduced to' indicates putting letters inside.
'relatives' becomes 'kin' (I've seen this before).
'in the' is an insertion indicator.
'heart of' means to look at the middle letters.
The middle letters of 'huguenot' are 'ue'.
'ra' put inside 'kin' is 'krain'.
'krain' placed inside 'ue' is 'UKRAINE'.
(Other definitions for ukraine that I've seen before include "Neighbour of Russia" , "Country bordering Russia" , "Country in SE Europe" , "European republic" , "Former USSR republic, capital Kiev" .)