Among the many prominent Tamil communities, the Vellalar community is perhaps the largest. It is also the most diverse. The Vellalar community is made of 150 endogamous clans. Endogamous clans do not marry outside their clan. However, modernization and migrations to foreign countries is changing this. Many modern day Vellalars marry Vellalars of other clans and sometimes, even non-Vellalars.
