Grisel Beaton Bethune - Too many children. Sources?

Her Last Will and Testament mentions children named Agnes Murray, Andro Murray, Judianne (Gideon) and William Murray. The inventory of her moveable estate was given up by John Murray of Blackbarony but a relationship is not mentioned.

Dame Grizel Betoun, Lady Blackbarony, made her last will and testament at Edinburgh on 2 August 1579. The inventory of her moveable estate was given up by John Murray of Blackbarony and Thomas Greg, portioner of Culrope: "in name & behalf of Agnes, Andro Judianne, and Williame Murrayis, hir lawfull barnes". In her last will and testament she nominated and appointed: "Agnes, Judianne and William Murrayis, brotheris & sister, hir barnes hir onlie executrs & intromettors wt hir guds & geir". She left five hundred merks in legacy to her daughter Agnes. Confirmation was granted on 26 December 1579. [National Records of Scotland, Edinburgh Commissary Court, The Testament Testamentar of Dame Grissell Betoun, Lady Blackbarony, reference CC8/8/7]

https://www.geni.com/documents/view?doc_id=6000000184080501861

[https://www.geni.com/documents/view?doc_id=6000000184080489837

https://www.geni.com/documents/view?doc_id=6000000184080482834

https://www.geni.com/documents/view?doc_id=6000000184080605832

Sir John Murray of Blackbarony may not have been the son of Grisel Beaton. Further investigation seems necessary.