in the United States due to family matters and Marshall started to complain about the separation: "I am sick of being alone and, Puppy dear, it is bad for me [...] I would sooner do anything than live alone." Since 1901 Mary Bliss, Warren's unmarried cousin, was living in Lewes House, and Marshall and she started a platonic relationship. In 1903 Marshall visited the Metropolitan Museum of Art and finding their Greek and Roman collection lacking, he convinced museum curator, Edward Robinson, who had moved from Boston to New York, to let him act as buyer for them. Robinson hired Marshall as the Museum's purchasing agent in Rome, and the same year, Gisela Richter began her long career at the Metropolitan. Bliss offered to help Marshall in this new task, substituting Warren in the role he had in the previous business venture for the Boston Museum of Fine Arts. By 1907 she was irreplaceable and she gave Marshall an ultimatum: she would continue to work with him only if they married. Marshall agreed on the only condition of their being a white marriage. Warren supported them and by 1910 he was back in England and they were all living together at Lewes House. Marshall was so successful in his business that he was able to donate a piece to the Met in his own name, a sandaled ivory foot carved during the Roman Empire dated between 31 B.C. and 14 A.D. John Davidson Beazley said, "Warren and Marshall had complete control of the market in classical antiquities. Almost everything that was good, whether a new find or an old, came to them for first refusal. Competition all but ceased." Another scholar said that "the combined works the two men were responsible for bringing to Boston and New York represent the greatest collection of Greek and Roman art in the world." More than 80% of the antiquities bought by Marshall for the Metropolitan Museum of Art are still on display. Marshall bought three terra cotta Etruscan warriors for the Met and the museum opened a new gallery of Etruscan art, "the first time in an American museum that an entire gallery had been devoted exclusively to Etruscan and Italian antiquities." The gallery opened in 1933, 5 years after Marshall died, and in 1961 it was found that the three warriors were a forgery and they were removed from display. Marshall, Bliss