I notice that you list Elizabeth Kennedy as the mother of Robert Vaux father of Mariotta Vaux.
Your post below:
Starting at Gilbert Agnew First of Galdenoch d 1623. His father was Andrew Agnew of Lochnaw m Katherine Gordon. That Andrew's dad was Patrick son of Quentin m Mariotta Vaux. Her dad was Robert son of Elizabeth Kennedy born before 1425, daughter of Gilbert of Dunure Ist Lord Kennedy and he son of Princess Mary (born before 1382)daughter Robert III Scotland (1337-1406).
I also list it that way.Do you have any support for that?I have looked for more support and I can't find it.
If that is true then both parents of Mariotta Vaux were descendants of the royal Family.If the first Sheriff was married to a descendant of the royal family then this marriage was one of blood of the Royal Family almost pure.To say the least it was strong if this is true.
At least all Agnew descendants of Quentin and Mariotta were descendants of the royal family through Mariotta's mother Euphemia Graham, daughter of Malise Graham, 1st Earl of Menteith, son of Eupheme Stewart, Countess of Caithness and Patrick Graham, Earl of Strathearn.
Patrick Graham, Earl of Strathearn was a descendant of Walter Stewart, 6th High Steward of Scotland the father of Robert II.Walter married Isabella Graham after Marjorie Bruce died.