I have created a map showing all Italo-Celtic subclades of R1b, namely everything downstream of S116 (P312). That represents most of the European R1b minus the Greco-Etruscan R1b-L23, the Germanic R1b-U106 and R1b-L238, and the Proto-Celto-Germanic L11, L51 and L150.
S116 includes subclades associated with non-IE languages such as Basque, and the ancient Gascon and Iberian languages. Since it is unclear exactly when and where Celtic languages developed and whether some Proto-Celtic speakers might have adopted indigenous languages in the land they settled (especially in Gascony and Mediterranean Iberia), all lineages were included for the purpose of this map, giving priority to Y-DNA over languages.
(Click on the map to enlarge)
The S116/P312 mutation probably existed many centuries before the Indo-Europeans arrived in Central Europe. In all likelihood it became dominant in Western Europe due to a founder effect in the group of R1b men who established themselves north of the Alps circa 2500 BCE, taking over the Bell Beaker culture and replacing it within a couple of centuries by the Unetice culture. If we follow the archaeological record, these Proto-Celts brought their Bronze-age culture immediately to France, Iberia and the British Isles.
Italy was settled later, once the Urnfield culture had developed north of the Alps. Urnfield might be seen as the cradle of the R1b-S28 (U152) subclade, which spawned the Italic tribes as well as the Hallstatt/La Tène Celts, who would become the Gauls.
The presence of Celtic (mostly L21) lineages in Iceland and Norway is due to the Irish and Scottish people taking as slaves by the Vikings. Other Celtic lineages (mostly S28/U152) reached Scandinavia with German settlers.
S116 includes subclades associated with non-IE languages such as Basque, and the ancient Gascon and Iberian languages. Since it is unclear exactly when and where Celtic languages developed and whether some Proto-Celtic speakers might have adopted indigenous languages in the land they settled (especially in Gascony and Mediterranean Iberia), all lineages were included for the purpose of this map, giving priority to Y-DNA over languages.
(Click on the map to enlarge)
The S116/P312 mutation probably existed many centuries before the Indo-Europeans arrived in Central Europe. In all likelihood it became dominant in Western Europe due to a founder effect in the group of R1b men who established themselves north of the Alps circa 2500 BCE, taking over the Bell Beaker culture and replacing it within a couple of centuries by the Unetice culture. If we follow the archaeological record, these Proto-Celts brought their Bronze-age culture immediately to France, Iberia and the British Isles.
Italy was settled later, once the Urnfield culture had developed north of the Alps. Urnfield might be seen as the cradle of the R1b-S28 (U152) subclade, which spawned the Italic tribes as well as the Hallstatt/La Tène Celts, who would become the Gauls.
The presence of Celtic (mostly L21) lineages in Iceland and Norway is due to the Irish and Scottish people taking as slaves by the Vikings. Other Celtic lineages (mostly S28/U152) reached Scandinavia with German settlers.
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