https://en.wikipedia.org/wiki/Towcester
Location of R-FT81743 about the end of Roman Times 400 CE (Saxon) Watling St (A5) Wessex & The Danelaw
https://en.wikipedia.org/wiki/Watling_Street

https://discover.familytreedna.com/y-dna/R-FT81743/tree

Matching ancient YDNA located under the floor of Lincoln Castle:
https://www.dailymail.co.uk/sciencetech/article-3110661/Who-Saxon-buried-beneath-Lincoln-Castle-Experts-reconstruct-face-mystery-man-bid-try-identify-him.html