> Has this Margaret Stewart been ruled out as a daughter of John Stewart, Lord Darnley ? > > Louise Gibson No, definitely not. I just didn't know of her. It is interesting that her two husbands were also Orkney/ Shetland men, from Symbister and Underhoull. I think this adds some tangential support for my suggestion about Christiane, daughter of Lord Darnley.

The interesting SP reference to Margaret Stewart mentioned by Louise: https://babel.hathitrust.org/cgi/pt?id=mdp.39015008828538;view=1up;seq=191 I see this Margaret Stewart had a son called "Francis," as did Christiane Stewart and husband Adam Mudie: https://babel.hathitrust.org/cgi/pt?id=umn.31951000733561r;view=1up;seq=225

I just wanted to point out that Robert, 1st Earl of Orkney, married his legitimate daughter Elizabeth Stewart to James Sinclair of Murchil, styled Master of Caithness, according the SP article on "Sinclair, Earl of Caithness." https://babel.hathitrust.org/cgi/pt?id=mdp.39015008828538;view=1up;seq=368 James Sinclair of Murchil was the son of Lord Darnley's widow, Jean Hepburn, by her second husband, John Sinclair, also Master of Caithness. One of the sons of James Sinclair and Elizabeth Stewart of Orkney was called Francis, probably, as with the other Francis Sinclair and (presumably) Francis Mudie, in honor of their close familial connection to Francis Stewart, 5th Earl of Bothwell.