On June 2, 2025, Prof. Marek Figlerowicz’s team from the Polish Academy of Sciences announced that the early Polish Piast dynasty belongs to the Y-DNA haplogroup R1b1a1b1a1a2c1a1f, also known as the R1b-S747 branch.
While we await the peer-reviewed and published verification of these facts, let's discuss what we currently know.
The R1b-S747 mutation is estimated to be approximately 2,000 years old, placing its origin between 500 BCE and 500 CE. This particular subclade is closely related to the Picts and Dalriadan Gaels, as found in the regions of Argyll, Perthshire, and Moray in the Highlands of the northern British Isles. Please note that these groups are not considered Scotts.
The finding is significant, as there were approximately 30 ruling Piast members from Mieszko I (d. 992) to Kazimierz III (d. 1370), and over 180 notable noble names. The Piast dynasty is culturally bound to the essence of what Poland is.
Image: Mieszko I, the first Polish Christian ruler, by master painter Jan Matejko.
By the ninth century, the Piast dynasty had established itself as Slavic rulers in the heart of Poland, including their legendary progenitors from earlier centuries, such as:
- Piast Kołodziej, "the caretaker wheelwright";
- Siemowit, "the family leader";
- Lestek, "the cunning"; and
- Siemomysł, "the thoughtful of the family".
Both the legend of Piast and the names suggest native and local Polish origin.
- Piast Kołodziej, "the caretaker wheelwright";
- Siemowit, "the family leader";
- Lestek, "the cunning"; and
- Siemomysł, "the thoughtful of the family".
Both the legend of Piast and the names suggest native and local Polish origin.
Despite the legendary Slavic origins, the Piast R1b-S747 is extremely rare in Slavic countries.
In contrast, which makes the matter highly controversial in Poland: most Slavic people belong to a different paternal haplogroup, R1a, which comprises up to 60% of:
- the Sorbs (Western Slavs in today's eastern Germany),
- Pomeranians (Western Slavs in today's Poland),
- the Sorbs (Western Slavs in today's eastern Germany),
- Pomeranians (Western Slavs in today's Poland),
- Kashubians (Western Slavs in today's Poland),
- Poland (Western Slavs core)
- and most Eastern Slavs, including those from Ukraine and the Slavic parts of the Moscow territory.
- and most Eastern Slavs, including those from Ukraine and the Slavic parts of the Moscow territory.
Please keep in mind that many north-western European R1b people had moved south during the medieval Great Migration period caused by the volcanic eruption of 536 AD, which plunged temperatures up to 2.5°C into the worst mini-ice age in the previous 2000 years. Altogether, as many as 13 large tribal groups, notably the Goths, moved through Europe in the 6th century.
This is likely when some of the (cold and hungry) Picts or Gaelic Piast ancestors moved about 850 miles southeast. Commuting was a common thing even back then, which turned into the Viking era. In fact, the Old Norse "víkingr" or "fara í víking" meant "to go on an expedition or raid by sea".
I know I lump the Picts and Gaelic people with the activities associated with the Scandinavians, but as we will learn, even Western Slavs were doing much Viking back then.
I know I lump the Picts and Gaelic people with the activities associated with the Scandinavians, but as we will learn, even Western Slavs were doing much Viking back then.