His brother was no keeper (4)
I believe the answer is:
abel
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">his brother was no keeper</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for abel that I've seen before include "Cornish city" , "Name" , "He was slain by Cain" , "First person killed" , "Cain's murdered brother" .)