Even though the About section says the name of his wife is unknown, he's connected to a wife named Sarah Ronald. I'm not sure she was his wife. The sourced data I've found indicate his wife was Elizabeth Gladwin:
https://www.berryfamilytree.org/p26.htm#i1706
Nicholas Mills II was born circa 1670 in St. Martin's Parish, Hanover, Virginia, USA; At the time of Nicholas' birth, Parishes of the Church of England (Anglican) served both religious and secular functions. Nicholas was born in what was at the time (1670) St Peter's Parish, New Kent County. The area became St Paul's Parish, Hanover County in 1704 and St Martin's Parish, Hanover County, in 1726.7 He was the son of Nicholas Mills I and Elizabeth Gladwin. Nicholas Mills II was baptized on 24 November 1672.8 He married Anne Clopton, daughter of William Clopton and Ann Booth, in 1692 in New Kent County, Virginia, USA.8,9 Nicholas Mills II died circa 1747 in St Martin Parish, Hanover County, Virginia, USA; Nicholas died in St Martin's Parish, Hanover County (formally New Kent County).1,7
Family
Anne Clopton b. c 1679, d. a 11 Jun 1754
Children
Ann Mills
David Mills
Charles Mills b. bt 1692 - 1695, d. 1764
Elizabeth Mills+ b. bt 1710 - 1715, d. b 1 Oct 1804
Citations
[S124] Unknown author, Public Family Trees (Ancestry) May not be reliable, Anderson Young Roche Hanna Bell Davis. Owner Brenda Lowry.
http://trees.ancestry.com/tree/14713737/person/150367596/…
[S255] W. P. Anderson, Anderson Family Records, Page 9.
[S181] Unknown author, Manuscripts, Memoirs and Compilations, Corkill and Sparacio, Pamunkey Neighbors of Orange County, Virginia, Antient Press, Arlington, 1995, Vol 1 Revised, Page 1.
[S251] Douglas Richardson, Royal Ancestry, Richardson, Vol II, Page 265-268.
[S137] Unknown author, "Old Tombstones in Kent County", Tyler's Quarterly Historical and Genealogical Magazine, Lyon G Tyler, Ed, Richmond Press, Richmond, 1933, Vol. XIV, page 242.
[S235] C G Bayne Palmer O'Brien, "Nicholas Mills Descendants", Ancestral File.
[S172] Electronic Web Site, online unknown url, The Clopton Chronicles, A Project of the Clopton Family Genealogical Society, accessed 8 Jul 2014.
[S124] Unknown author, Public Family Trees (Ancestry) May not be reliable, English-American Family II, Tree 28974842, owned by Victoria_Duhon, extracted 6 May 2014.
[S434] Lucy Lane Erwin, William Clopton of York County, Chapter VI, page 133-140.
Also Family Search has Elizabeth Gladwin as his wife: https://ancestors.familysearch.org/en/LC7F-HZL/nicholas-mills-1675-...
Is there any documentation for the wife named Sarah Ronald? I've only seen her on Wiki and the source given for her there is just the connection here on Geni, but the Geni profile has no sources for Sarah Ronald.