Wikipedia
Cherian
Cherian is a Syrian Christian surname of West Asian (Hebrew-Aramaic) origin, presumed to be a derivative of Zecharya (Zacharias or Zechariah) and a variant of Zacharias popular among Kerala Christians. The final -n is the Malayalam third-person masculine singular suffix.
In India it is mostly found only as a given name although this trend is changing in the present generations, but in the United States and United Kingdom, Europe and Australia, it is also used as a family name among expatriate families from Kerala.