{"nrhp_refnum":"74001767","name":"Coventry Hall","other_names":[],"category":"building","location":{"address":"Off PA 23, South Coventry Township","address_restricted":false,"city":"Coventryville","county":"Chester County","state":"PA","lat":40.175127555000074,"lon":-75.68683012499997,"geom_source":"nps_gis"},"listed_date":"1974-12-16","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Industry","Architecture","Invention"],"significance_levels":["national"],"summary":{"what_it_is":"Coventry Hall is a two-and-one-half story stone house in the village of Coventryville in northern Chester County, Pennsylvania, built in three successive phases beginning around 1740-1760 and extended in 1798-1803 and later in the nineteenth century.","why_significant":"The nomination argues that the house is tied to the colonial iron industry through its builders and early owners, Robert and Rebecca Grace, and to Benjamin Franklin, whose prototype stove was first tested in its southwest parlor fireplace. It also points to architectural features retained from its different building phases, including the Georgian fireplace wall, panelled window recesses and a semi-circular arched window.","narrative":"Coventry Hall is a two-and-one-half story house of random fieldstone, later faced with cut stone and stucco, in the village of Coventryville in northern Chester County. Robert and Rebecca Grace built the original section between about 1740 and 1760, and Robert May added an eastern section in 1803 with a datestone and a semi-circular arched window. The Graces ran the nearby Coventry Forge and Warwick Furnace, which operated as Anna Nutt and Company. Benjamin Franklin gave Robert Grace the design for an open fireplace stove, and the prototype was tested in the southwest parlor fireplace, which has a fully panelled Georgian wall. Later owners included Colonel Caleb North, a Revolutionary War officer. The house is regarded as important for its ties to colonial iron production, Revolutionary-era events and its surviving interior and exterior features from several building periods.","period_of_significance":"1750-1800","architect_builder":null,"architectural_style":"Georgian and Federal sections; later nineteenth-century frame addition","criteria":[],"status_note":"Converted to apartments and other uses after the Loomis family period; later sold to purchasers who started a trailer camp that went bankrupt.","vacant_flag":null,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:29.688737-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/74001767.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/74001767/02493d7714-800.webp","url_1600":"https://nationalhistoricalregister.com/media/74001767/02493d7714-1600.webp","licence":"CC BY-SA 3.0","author":"Willjay","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:CoventryHouse_PA.jpg\" rel=\"noopener\">Willjay</a>, <a href=\"http://creativecommons.org/licenses/by-sa/3.0/\" rel=\"license noopener\">CC BY-SA 3.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:CoventryHouse_PA.jpg"},"district":{"nrhp_refnum":"78002378","name":"Coventryville Historic District","url":"https://nationalhistoricalregister.com/districts/pennsylvania/coventryville-historic-district-78002378/"},"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71995178","wikipedia":"https://en.wikipedia.org/wiki/Coventry_Hall","wikidata":"https://www.wikidata.org/wiki/Q5179090"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/chester-county/coventry-hall-74001767/"}