Question: What is the name of this town in Rensselaer County, New York, which is emcompassed by Rensselaer Plateau with a population of 2,130?
Sentence (from "Casparus F. Pruyn House"): Pruyn was rent collection agent for Stephen Van Rensselaer and, after Stephen's death, William Van Rensselaer who had inherited the "East Manor" in Rensselaer County.
Relevant evidence: No