+--Nicholas Bowett 
Elizabeth Bowett 
|              +--Alan la Zouche  (-1260/70)
|           +--Endres or Ivo la Zouche 
|        +--William la Zouche  (ABT 1276-1352)
|     +--Roger Zouche 
|  +--Sir John Zouche 
+--Elizabeth Zouche 
   |     +--William de Burgh 
   |  +--Thomas de Burgh 
   +--Margaret de Burgh 
      +--Lucie de Bellaqua