 <unk> 's financial successes enabled him to join the elite society of Boston . In 1789 he purchased a large mansion on fashionable <unk> Square , and also bought a country estate in <unk> that grew over time to 300 acres ( 120 ha ) . He had a house built on the estate , most of which he operated as a gentleman farmer . He and other similarly @-@ situated <unk> formed the Massachusetts Society for <unk> Agriculture , of which he served as a trustee for several years ; the organization was not seen as significantly contributing to advances in agriculture . 
