The area which they lived was quite rural and agricultural based. All of my generations besides me and my sister we have originated from Punjab, India. My parents are named Nirmal and Balbir Singh. The last name Singh is a last name all my ancestors had. By doing some research, I figured out that the reason for all our last names being Singh was based on our religion.
Most people are of the Sikh religion there last names are Singh.
So as far as I could trace back I figured that all the last names are Singh. That might sound unusual, but that's the only last name my ancestors ever had. So going back to parents to my great grandparents their last names was all Singh. My parents came to United States in 1970 and couple years after came my grandparents from my mother's side. My parents had it rough in the beginning coming to this country.