I have researched this same linkage, as my husband is a descendant of Jemima Gaddie (Sherwood's daughter) b. 1768 in Virginia. My biggest problem is where the information on the Gaddie/Gaddy/Geddy line comes from. It appears that Jemima married a Peter Mastin in Virginia...but I can't find them...I don't know anything beyond that. I am simply going off of submitted ancestry files and trying to track down those listed. Any idea where records are for the Gaddies or the Brights? Does anyone have anything on the Mastins? What I have is that Peter and Jemima had a daughter Betsy who married William Barnett, had a daughter Julia Ann who married Solomon T Ritchey...etc....I have verifed everything up through Betsy. I looked for Jemima with no luck.
Also, one source I checked on the royal lineage has Elizabeth Stewart as the daughter of Sir John Stewart of Balveny and Margaret "Beatrix " Douglas. John was the son of Sir James Stewart, the Black Knight and Jane Beaufort while Margaret was the daughter of Archibald, 5th earl of Douglas. http://www.stirnet.com/HTML/genie/british/ss4tz/stewart19.ht...
Did I track this incorrectly? I'm pretty new at this.
Anyway, any information on the Gaddies (including the real spelling), Mastins or Brights would be welcome!!!