Margaret de Pressene - Married Walter Buchanan or a Mis-merge

I've removed Sir Walter Buchanan, 11th Chief of Buchanan as her husband, as the only sources provided indicate Sir Thomas de Grey, of Heaton
as her husband.

These two possibly spurious husbands have been attached to her as well: Robert Neville & SIr John Lilburne, Kt. without sources.

My interest here is in preventing her being merged into Sir Walter's wife, Margaret Beauchamp - so I've MPed to prevent that - but will leave it to the 69 managers to decide whether they want the other two husbands deleted.