Elizabeth Robertson (Stewart) - Miss-merged with Elizabeth Lyon

Why does my tree claim the Alexandar the 5th Struan appears twice in the tree. When I click on it, it takes me to his son Robert Younger. Any idea why? Is this a temporary glitch? Also can anyone in this line assist me in authenticating information on Robert the first son of Alexandar 12th Struan. The history assumes he is dead but he is aboard a slave ship (although by the time they arrive Alexandar the 13th and William have been released by French privateers, and my Robert and James arrive in the colonies "UNindentured". Records sayu they assume Robert son of Alex 12th (John) had died prior to his brother, the second son, Alex 13th gaining title. I think we can prove he came to the colonies. Our James left crumbs of the Scipio slave ship (although he had been in the colonies earlier as well) and he claims he is Robi's son, ancestor to John (Alexandar) Robertson and Catherine. They seem to match other than the assumption of Robert's death. I also have found some evidence that John Reid (I think he was the 9th or 10th Struan) was believed dead in 1630, but I found him in Barbados in 1632. So I guess anything is possible. Seems some of the clan had been repeated "guests" of crown as political prisoners.

This MP seems to be for this same Lady Elizabeth Stewart, at least she has the same parents and same photo but different husbands:

Elizabeth Stewart

Her father's Wikipedia page indicates he had more than one daughter named Elizabeth. Not sure if what's on here is correct or nor:

https://en.wikipedia.org/wiki/John_Stewart,_1st_Earl_of_Atholl

It says John married twice:

1st wife: Lady Margaret Douglas, Fair Maid of Galloway
and with her had Lady Elizabeth Stewart, married Andrew Gray, 2nd Lord Gray.

2nd wife; Lady Eleanor Sinclair and with her had:

1) Lady Elizabeth (Elspeth) Stewart, married Sir Robert Innes, 2nd of Innermarky.
2) Lady Elizabeth Stewart I, married Alexander Robertson of Strowan.
3) Lady Elizabeth (or Isabel) Stewart II, married John Stewart, 3rd Earl of Lennox.

The only external source for his Wikipedia info is:

http://www.thepeerage.com/p10213.htm#i102130 which gives several references

I can't imagine why he'd want to name so many daughters Elizabeth, but it seems that her on Geni some of them have become incorrecly connected.

BUT when I go to The Peerage, every single daughter named Elizabeth or Elspeth that I click on shows her mother as Eleanor Sinclair and not one of them shows as the daughter of Margaret Douglas. So things are matching up, because The Peerage doesn't even show Margaret with a daughter named Elizabeth.

I have no idea if John and Eleanor actually had 4 daughters named Elizabeth / Elspeth or if some of those are the same person who had multiple marriages.