House party in northern part of Turkey (5)
I believe the answer is:
tudor
'house' is the definition.
(royal house)
'party in northern part of turkey' is the wordplay.
'party' becomes 'do' (do can informally mean a party).
'in' indicates putting letters inside.
'northern' shows that the letters should be reversed in order (in a down clue, letters go up or 'north').
'part of turkey' becomes 'rut' (I can't justify this - if you can you should give a lot more credence to this answer).
'rut' back-to-front is 'tur'.
'do' placed within 'tur' is 'TUDOR'.
Can you help me to learn more?
(Other definitions for tudor that I've seen before include "Of English C16" , "Style of architecture in 15th century England" , "Name of the English royal family of Elizabeth 1st" , "Half-timbered-house style" , "Dynasty's founder" .)