Bodine and Spalding give hims a wife, Elizabeth de Knoville, quoting CP VIII, 347, but in fact the refereence is VII, 347.  On those pages there is an Elizabeth who m. a Thomas de Maduit, but no Warin.  IN any case, I suspect some confusion between the names Elizabeth and Eleanor.  Let time unravel this knot!  Anyhow I have left his wife blank, as did John Ravikous in his excellent soc.gen.med posting.
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