Tyler's _Encyclopedia of Virginia Biography_ traces the family of Stewart of Norfolk, Virginia, whose "revolutionary ancestor was Charles Stewart, born about 1730 ... [had Revolutionary service] ... died in February, 1801."
https://www.google.com/books/edition/Encyclopedia_of_Virginia_Biography/2PIsnKun_mUC?hl=en&gbpv=1&dq=%22ence+for+those+of+his+ancestors+who%22&pg=PA265&printsec=frontcover
Most of his children mention in this sketch were born in 1780 or later, which makes us wonder if there could have been two Charles Stewarts in succession, rather than one born ca. 1730, and died 1801.
This Charles Stewart, or the elder one at least, is given an entry in Wikipedia as an actor in the Somersett Case which ended slavery in Great Britain.
https://en.wikipedia.org/wiki/Charles_Stewart_(customs_official)
The Wikipedia sketch implies Charles Stewart was in America, probably at Norfolk, Va, in 1749.
The Ezekiel Goldthwaite notarial records from Massachusetts mention Charles Stewart of Norfolk in 1749 as a nephew of John Traill, deceased, merchant of Boston:
https://babel.hathitrust.org/cgi/pt?id=hvd.32044100184233&view=1up&seq=281&skin=2021&q1=crailia
He is acting with his brother James Stewart of Edinburgh, writer, sister Cecilia Stewart of Edinburgh, spinster, and Isobel Traill (apparently an aunt, sister to the siblings' mother Marjorie Traill).
The previous entry in the Goldthwaite records gives fuller information on the family grouping:
"Mrs Marjory Traill Daughter to the said William Traill and Barbara Balfour was married to Charles Stewart, Steward Clerk of Bukney [? poss. Orkney] who are both now deceased and left Issue. James the eldest writer in Edinburgh, the second [son, unnamed] merchant in Virginia and Mrs Crailia [sic; Cecilia] Stewart Spinster at Edinburgh yet on life ..."
John Traill, merchant of Boston, was another son of William Traill and Barbara Balfour, according to _Royal Descents of 900 Immigrants_, which mainly traces the descendants of another immigrating nephew, Robert Traill of New Hampshire, ancestor of the famous Traill- Spence- Lowells of New England.
I noticed the baptismal record for the sister Cecilia:
Name Cicillia Stewart
Sex Female
Christening Date Sep 1721
Christening Place Kirkwall, Orkney, Scotland
Christening Place (Original) Kirkwall and St Ola, Orkney, Scotland
Father's Name Charles Stewart
Father's Sex Male
Mother's Name Merjory Traill
and for Charles Stewart himself:
Name Charles Stewart
Sex Male
Christening Date 26 May 1725
Christening Place Kirkwall, Orkney, Scotland
Christening Place (Original) Kirkwall and St Ola, Orkney, Scotland
Father's Name Charles Stewart
Father's Sex Male
Mother's Name Marjorie Traill
John Traill of Boston shared the same RD as his nephew Robert Traill of New Hampshire (from King James V via Lord Robert Stewart, Earl of Orkney, and the illegitimate Stewarts of Graemsay).