THE OUTSTANDING FIGURE of Catherine’s reign, other than Catherine herself, was Gregory Potemkin. For seventeen years, from 1774 to 1791, he was the most powerful man in Russia. No one else during her life was closer to Catherine; he was her lover, her adviser, her military commander in chief, the governor and viceroy of half of her empire, the creator of her new cities, seaports, palaces, armies, and fleets. He was also, perhaps, her husband.