[1] John Hope likely studied law; in 1760 he made a Grand Tour with his cousin Oliver to Italy and bought 24 drawings or etchings by Antonio Visentini.
In 1763 he married Philippina Barbara van der Hoeven (1738-1790), the daughter of a Rotterdam mayor, who also had a strong interest in art.
[4] Unlike his cousin and business partner Henry Hope, Jan wanted to participate in the fashionable Dutch societies that actively propagated the Scottish Enlightenment.
His cousin Henry humored him and let him expand the joint art collection, used to impress the clients (often foreign heads of state).
John Hope owned a whole series of tables of the most varied types of stone, some of which had been excavated in his presence at the Villa Hadriana in Tivoli.
The boys were brought up by their mother, who kept the Heemstede property and received visitors there to view the gardens with the many follies and her large art collection.
In 1802 only Adrian Elias returned to the Netherlands, notorious because of his unpredictable behavior; he spend the rest of his life working on the gardens of Groenendaal and Bosbeek, until he was declared insane, presumably by order of his family, and died in 1834 without offspring.
The park he purchased and expanded was located on a high sandy ridge of dunes between the Leidsevaart and Harlem Lake.
The windmill he had previously installed proved unable to provide enough water on windless days for his richly planted garden in the English style.
In 1842 it was broken up, for even as a curiosity it could no longer hold out against the much larger steam boiler of the Cruquius pumping station down the road.