Michael Stills's DNA has been tested for genealogical purposes. It may be possible to confirm family relationships by comparing test results with Michael or other carriers of his ancestors' Y-chromosome or mitochondrial DNA.
Y-chromosome DNA test-takers in his direct paternal line on WikiTree:
Hope you are well, just dropped by to say how much we appreciate your contributions to the community's shared tree. You are doing a wonderful job of support others, through your work, you obviously love what you do. Thank you
Hi, Michael. I recall seeing that same direct-descent connection when you were the Connection Finder target. I guess it's somewhat unusual to have a blood relationship without any connections-by-marriage to short-circuit the connection that's based on the blood relationship. (Example: Carole Partridge and I are 9th cousins once removed, but my Connection Finder connection to her is based on my much closer relationship to her husband.)