American whaler George Potter departed to sea in 1819

Of Nantucket, master David Cottle, departed on 17 June 1819 towards the Brazil Banks and returned on 28 March 1821 with 76 barrels sperm and 684 barrels whale.

Source
Catalogue of Nantucket Whalers and their voyages from 1815 to 1870. Hussey&Robinson, Nantucket, 1876.