Y-DNA haplogroup
Also written H-Z12537
17 individuals in Genoplot's reference catalogue carry Y-DNA haplogroup H1a1a4b3 (H-Z12537) or a branch of it, across 5 populations; 7 of them ancient.
Tamils_GBR 5 individualsBengali_Bangladesh 4 individualsGujarati 4 individualsTamil_Sri_Lanka 2 individualsTelugu_GBR 2 individualsIndividuals whose call goes no further down a listed branch; the others are on their branch's page. Oldest first. Calls are from the Allen Ancient DNA Resource, mostly automatic, with the terminal SNP shown.