I double-checked my data set to look into this, and you're right. Nearly all of the Pircs in that time period were done by a guy named Moheschunder Bannerjee: https://en.wikipedia.org/wiki/Moheschunder_Bannerjee
He contributed to the development of the Indian Defence.
Why do you all have your own datasets of historical chess moves? Is this a popular playground for data analysis, or is it something chess learners study?
He contributed to the development of the Indian Defence.