{"nrhp_refnum":"85002377","name":"Trimbleville Historic District","other_names":[],"category":"district","location":{"address":"Northbrook, Broad Run, and Camp Linden Rds.","address_restricted":false,"city":"Pocopson & West Bradford Twps.","county":"Chester County","state":"PA","lat":39.93110622100005,"lon":-75.68221145803105,"geom_source":"nps_gis"},"listed_date":"1985-09-16","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Industry","Military","Education","Exploration/Settlement","Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"Trimbleville is a small hamlet and historic district at the forks of the Brandywine River's West Branch, spanning the Chester County townships of West Bradford and Pocopson, Pennsylvania. Its core buildings are mostly stone houses and farm complexes dating from the late 18th and early 19th centuries, along with a mill site.","why_significant":"The nomination argues that Trimbleville reflects major themes in Chester County history, including settlement by a Quaker family, a mill seat operating for nearly 200 years, a five-generation family farm, the site of a distinguished private school, and a role in the 1777 Battle of Brandywine. It also describes the hamlet as an outstanding example of a rural Chester County landscape with minimal physical change since the mid-20th century.","narrative":"Trimbleville is a hamlet of stone houses, farm complexes and a mill on the West Branch of the Brandywine River in West Bradford and Pocopson townships. Settled by Quaker families, the site began with a grist and saw mill partnership and a fording place, and the Trimble family held the mill for generations. Most of the six principal buildings date from the late 1700s and early 1800s and are built of pointed stone with gable roofs and end chimneys. The hamlet is linked to the Battle of Brandywine, when more than 12,000 British troops crossed at Trimble's Ford on September 11, 1777. It also housed Greenwood Dell Boarding School, run by Jonathan Gause, whose most famous pupil was the writer Bayard Taylor. The surrounding landscape of meadows, hills and river has changed little since the mid-twentieth century, and the district illustrates rural Chester County life across more than two centuries.","period_of_significance":null,"architect_builder":null,"architectural_style":"Rural vernacular architecture from the Colonial to Federal periods","criteria":[],"status_note":"The former homestead remains largely intact, and the mill tract is as William Trimble left it.","vacant_flag":null,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:33.897931-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/85002377.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/85002377/75ce082366-800.webp","url_1600":"https://nationalhistoricalregister.com/media/85002377/75ce082366-1600.webp","licence":"CC0","author":"Smallbones","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Trimbleville_HD.JPG\" rel=\"noopener\">Smallbones</a>, <a href=\"http://creativecommons.org/publicdomain/zero/1.0/deed.en\" rel=\"license noopener\">CC0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Trimbleville_HD.JPG"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71992627","wikipedia":"https://en.wikipedia.org/wiki/Trimbleville_Historic_District","wikidata":"https://www.wikidata.org/wiki/Q7842151"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/chester-county/trimbleville-historic-district-85002377/"}