Byron's mathematician daughter (3)
I believe the answer is:
ada
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">byron's mathematician daughter</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for ada that I've seen before include "Novel by Vladimir Nabokov" , "- Lovelace, Byron's daughter & computer pioneer" , "Girl's name, one letter short of a man's name" , "Computer language; girl's name" , "Programming language" .)