Haplogroup H1 is by far the most common subclade in Europe, representing approximately than half of the H lineages in Western Europe. Roostalu et al. (2006) estimate that H1 arose around 22,500 years ago. H1 is divided in 65 basal subclades. The largest, H1c, has over 20 more basal subclades of its own, most with deeper ramifications. H1 is found throughout Europe, North Africa, the Levant, Anatolia, the Caucasus, and as far as Central Asia and Siberia. The highest frequencies of H1 are observed in the Iberian peninsula, south-west France and Sardinia. H3 has a very similar distribution to H1, but more confined to Europe and the Maghreb, and is generally two to three times less common than H1.
[Text source: https://www.eupedia.com/]
[Graphic source: http://ftdna.com]