Otho, Otis. Otto is a masculine German given name. It originates as an Old High German short form (variants Audo, Odo, Udo) of Germanic names beginning in aud-, an element meaning wealth, prosperity. The name is recorded from the 7th century (Odo, son of Uro, courtier of Sigebert III).
Construction of the Fountain. Already in the fifteenth century a small Trevi Fountain was built here during the papacy of Nicholas V. In 1732, pope Clement XII commissioned Nicola Salvi to create a large fountain at the Trevi Square to replace the existing fountain.
The fountain, which is designed like a monumental triumphal arch, was built against a wall of the Palazzo Poli. It measures twenty meters wide and twenty-six meters high and occupies more than half the square. The central figure of the fountain, standing in a large niche, is Neptune, god of the sea.