A royal house (7)
I believe the answer is:
windsor
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">a royal house</span>' is the definition.<br/ ><span class="explanation-format__explanation">(Windsor is an example)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for windsor that I've seen before include "one such as Edward VIII" , "Barbara" , "Chair < for house" , "town near Eton" , "Home to Shakespeare's merry wives" .)