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 showed signs of unusual abstraction, and spent as much time as he possibly could at his farm on the Pawtuxet Road. He seemed, it 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.