Biographies of American Seedsmen and Nurserymen Gregory, James J. H.–(1827-1910)–Marblehead, Massachusetts–was born at Marblehead, Massachusetts on November 7, 1827.  He went to Middlebury College and graduated from Amherst College in 1850.  He began a business of selling high quality seeds  in 1850 in Marblehead, Massachusetts after he sent some winter squash seeds that his father had raised to a farmer who had requested some in New England Farmer.  His business was called the Gregory Seed Business.  He sent Hubbard squash seeds all over the United States.  In 1875 he purchased the Burbank potato that had just been developed by Luther Burbank.  It was Burbank’s first success at plant breeding done while he was a gardener in Massachusetts.  Gregory had over 400 acres in seed farms.  He wrote and distributed many treatises on different agricultural subjects, and lectured extensively on agricultural and horticultural topics.  He died on February 20, 1910.
Sources:  MHS; Plants; Bailey; CLG