Royal house (5)
'royal house' is the definition.
(the House of Tudor was a royal house)
This is all the clue.
(Other definitions for tudor that I've seen before include "Name of English royal family during 16th century" , "Former English royal house" , "A royal house of England" , "Style of architecture in 15th century England" , "(Pertaining to) royal house" .)
'royal house' is the definition.
(house where a royal family live)
This is the entire clue.
(Other definitions for palace that I've seen before include "Locality round a monarch's official residence" , "Royal mansion" , "Regal mansion" , "football team" , "imposing building" .)