Question: Squire Cheyney Farm is a historic farm and national historic district located in Thornbury Township, Chester County, Pennsylvania, Thomas "Squire" Cheyney, was later appointed to the Pennsylvania Ratifying Convention to ratify the United States Constitution, the supreme law of which country?
Sentence (from "Squire Cheyney Farm"): The additions were built about 1815, about 1830, and about 1850, making it a seven-bay-wide dwelling.
Relevant evidence: No