First fratricide victim (4)
I believe the answer is:
abel
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">first fratricide victim</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 abel that I've seen before include "Victim of 11" , "Son of Adam and Eve" , "Victim of murderer" , "The first recorded murder victim" , "Cain's victim; - Magwitch (Great Expectations)" .)