In using this free tool I noticed that I had 5cM match for three references:
Loschbour, LUX, 8ky, (two segments larger than 5 cM); ESP16 Esperstedt, GER, 2,500 BC; and 04 Oakington, Cambs., ENG, 400-545 AD.
And one with 6cM - Bichon, SWI, 13,700 BP.
What is going on here? Are not the...