Humphry Marshall

Humphry Marshall was born at Derbydown Homestead in the village of Marshallton, Pennsylvania (within West Bradford Township) on October 10, 1722.

Marshall received the rudiments of an English education, and was apprenticed to the business of a stonemason, which trade he subsequently followed.

[2] He began to devote his attention to astronomy and natural history, building a small observatory in one corner of his residence.

This research paper Slavery-in-the-Greater-Philadelphia-copyedited-Jan-2024.pdf case #16 mentions Negro Abraham Johnson, slave of Humphrey Marshall.

On June 27, 2007 — proclaimed Humphry Marshall Day by West Chester mayor Dick Yoder — a marker honoring the park's namesake was unveiled.