American whaler Brothers departed to sea in 1817

Of Nantucket, master Alexander D. Bunker, departed on 8 August 1817 to the Pacific Ocean and returned on 5 November 1819 with 1.506 barrels sperm, and 110 barrels whale.

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