Construction

States Dyckman, a descendant of early Dutch settlers of Manhattan, had managed to retain his family fortune despite being an active Loyalist and working in the British Army's Quartermaster Corps for most of the war, keeping the accounts of various quartermasters. When Sir William Erskine, Quartermaster General, returned to England in 1779 to face an audit and investigation for war profiteering, he asked Dyckman to accompany him. He remained in England ten years, participating in other investigations of quartermasters and only returned to the newly independent United States in 1789.^[1]

While in London he associated with many wealthy members of society and acquired their tastes, particularly for the neoclassical buildings of Robert Adam. He bought many furnishings and decorative objects, such as a Wedgwood dinner service, and had them shipped back to the United States with him.^[3] With the interest on a sizable life annuity granted him by Sir William Erskine, Dyckman intended to form an estate on 250 acres (1 km²) near Montrose and named it Boscobel, perhaps after Boscobel House in Shropshire (itself named for the Italianate bosco bello, "pretty woodland"), symbolizing his Anglophilia.^[6] According to one biographer, he saw himself as a "conspicuously well-fixed farmer, surrounded with objects of taste...who did not farm too seriously".^[1] He began this process by marrying Elizabeth Corne, daughter of another Loyalist family, in 1794. But within a year he faced financial difficulties, the halt of Erskine's annuity by his heirs after his death and his own lavish tastes and generous gifts to less fortunate family members contributing to reduce his circumstances.

Dyckman returned to London in 1799, expecting to mend his fortunes and return to his wife, son and daughter within a year.^[1] Instead he remained three years, finishing the remaining quartermasters' investigation under John Dalrymple, himself once one of the inquiry's targets. He restored his fortunes by persuading the Erskines to restore their annuity and negotiating an extremely generous settlement with Dalrymple and the other quartermasters whom he had helped clear, apparently by manipulating evidence.^[1]

Wealthier but injured and ailing, Dyckman returned to the United States in 1803 and began the construction process for the house he had long planned. It is possible that he had blueprints drawn up in England, since work began within six months of his return.^[3] The architect is not known, although surviving records show that a William Vermilye was heavily involved as construction manager.^[3] Dyckman died in 1806, before it was finished. His widow had it completed, and she and their surviving son moved into it in 1808.

Restoration

Front entrance road (2007)

The family retained ownership of the house until 1920. For the next 35 years, under subsequent owners, it frequently faced the possibility of being demolished. In 1955 an organization called Friends of Boscobel saved it from a contractor who had bid $35 to knock it down after the Veterans' Administration had built a hospital on the site. They arranged for it to be moved to a similar location upriver, near Cold Spring, a year later,^[2] using photographs from the Historic American Buildings Survey to guide the reconstruction.^[3]

Lila Acheson Wallace, co-founder of Reader's Digest, had at first anonymously provided the $50,000 donation to make the move and reconstruction possible. As Friends of Boscobel became Boscobel Restoration, Inc., she took a more public role as a director, particularly in overseeing the landscaping and interior decoration.^[2] Richard K. Webel designed grounds for the new site that bore little resemblance to its original surroundings, favoring the "country house" style popular in the early 20th century. Large grown trees were planted to give the impression that the house had always been there.^[7]

The rebuilt home was formally reopened on May 21, 1961, at a ceremony attended by then-Governor Nelson Rockefeller, who praised it as "one of the most beautiful homes ever built in America". Lila Acheson Wallace later spearheaded the development of a 40-minute sound and light show on the grounds, which ran twice a week in summers until the late 1970s. Around that time, new papers of Dyckman's were discovered, and the house was closed for six months in 1977 while it was redecorated in a manner more consistent with his recorded tastes. It opened again that summer to high praise.^[7]