Royal dynasty (5)
I believe the answer is:
tudor
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">royal dynasty</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for tudor that I've seen before include "Half-timbered-house style" , "Owen's house" , "Welsh royal house" , "regal dynasty" , "Relating to the English ruling family in the 1500s" .)