Complex sentence: Like their Tirunelveli counterparts, the Nadars of Travancore were mostly palmyra climbers, although a significant number subtenants to Nair or Vellalar landlords.
Split into simpler sentences: Like their Tirunelveli counterparts, the Nadars of Travancore were mostly palmyra climbers. However, a significant number of Nadars were subtenants to Nair or Vellalar landlords.