Looks like RJ has corrected this by removing Elizabeth Troutbeck as the mother of Margaret Knollys Barrett. I think the question still remains as to who her correct parents are - sources?
For that matter, Margaret is now a daughter Robert Knollys and a granddaughter of Robert Knolly by Elizabeth Troutbeck. However, I think there is still a problem here. Is Robert a son of Robert Knollys and Elizabeth Troutbeck? I think they had two daughters and co-heirs Anne who married Henry Frowick, and Elizabeth who married James Stracheley - no surviving sons.