Toured about after losing its fifth royal house (5)
I believe the answer is:
tudor
'royal house' is the definition.
(Tudor is an example)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for tudor that I've seen before include "Half-timbered-house style" , "Welsh royal family" , "Dynasty on the English throne 1485-1603" , "Pre-Stuart royal house" , "Architectural style" .)