Besides the centuries-old instinctive use of “their”, people have been formally concerned about the gendered pronoun problem since at least 1795, and have been coining new pronouns for about the last century and a half. The first, sometime around 1850, were “ne, nis, nim”, and “hiser”. In 1868, “en” appeared, followed by a rush in 1884: “thon, thons”, “hi, hes, hem”, “le, lis, lim”, “unus”, “talis”, “hiser, himer”, “hyser, hymer”, and “ip, ips”… Many more coinings followed between 1888 and 1891, then interest died for two decades.