‘Monday evening last, Mr. Joseph Curwen, of this Town, Merchant, was married to Miss Eliza Tillinghast, Daughter of Capt. Dutee Tillinghast, a young Lady who has real Merit, added to a beautiful Person, to grace the connubial State and perpetuate its Felicity.’

The collection of Durfee-Arnold letters, discovered by Charles Ward shortly before his first reputed madness in the private collection of Melville F. Peters, Esq., of George St., and covering this and a somewhat antecedent period, throws vivid light on the outrage done to public sentiment by this ill-assorted match. The social influence of the Tillinghasts, however, was not to be denied; and once more Joseph Curwen found his house frequented by persons whom he could never otherwise have induced to cross his threshold. His acceptance was by no means complete, and his bride was socially the sufferer through her forced venture; but at all events the wall of utter ostracism was somewhat torn down. In his treatment of his wife the strange bridegroom astonished both her and the community by displaying an extreme graciousness and consideration. The new house in Olney Court was now wholly free from disturbing manifestations, and although Curwen was much absent at the Pawtuxet farm which his wife never visited, he seemed more like a normal citizen than at any other time in his long years of residence. Only one person remained in open enmity with him, this being the youthful ship’s officer whose engagement to Eliza Tillinghast had been so abruptly broken. Ezra Weeden had frankly vowed vengeance; and though of a quiet and ordinarily mild disposition, was now gaining a hate-bred, dogged purpose which boded no good to the usurping husband.

On the seventh of May, 1765, Curwen’s only child Ann was born; and was christened by the Rev. John Graves of King’s Church, of which both husband and wife had become communicants shortly after their marriage, in order to compromise between their respective Congregational and Baptist affiliations. The record of this birth, as well as that of the marriage two years before, was stricken from most copies of the church and town annals where it ought to appear; and Charles Ward located both with the greatest difficulty after his discovery of the widow’s change of name had apprised him of his own relationship, and engendered the feverish interest which culminated in his madness. The birth entry, indeed, was found very curiously through correspondence with the heirs of the loyalist Dr. Graves, who had taken with him a duplicate set of records when he left his pastorate at the outbreak of the Revolution. Ward had tried this source because he knew that his great-great-grandmother Ann Tillinghast Potter had been an Episcopalian.

Shortly after the birth of his daughter, an event he seemed to welcome with a fervour greatly out of keeping with his usual coldness, Curwen resolved to sit for a portrait. This he had painted by a very gifted Scotsman named Cosmo Alexander, then a resident of Newport, and since famous as the early teacher of Gilbert Stuart. The likeness was said to have been executed on a wall-panel of the library of the house in Olney Court, but neither of the two old diaries mentioning it gave any hint of its ultimate disposition. At this period the erratic scholar shewed signs of unusual abstraction, and spent as much time as he possibly could at his farm on the Pawtuxet Road. He seemed, as was stated, in a condition of suppressed excitement or suspense; as if expecting some phenomenal thing or on the brink of some strange discovery. Chemistry or alchemy would appear to have played a great part, for he took from his house to the farm the greater number of his volumes on that subject.