From the 2021 paper, "Ancient genomes reveal structural shifts after the arrival of Steppe-related ancestry in the Italian Peninsula", a male skeleton from a Chalcolithic (Copper Age) graveyard in Emilia Romagna has been verified to bear M26 on his Y-Chromosome. The skeleton was likely buried around 2800 B.C.
More proof that M26 was present in the Italian mainland during prehistoric times, and is NOT indicative of a historical Sardinian origin.
