The name Martinitt refers to a historical boy orphanage of Milan, Italy, that was established in the 16th Century, now part of Pio Albergo Trivulzio, a public Milanese institution that provides aid to needy orphans, elders and other people experiencing social difficulties.
The orphan boys themselves were thus referred to as Martinitt, a plural of Martinett ("little Martin") in Lombard language.
Federico Borromeo later decided to give out another building, the "Spedale dei Mendicanti" ("beggars' hospital"), which was used for orphan girls.
The Martinitt then moved again, first in some buildings in Brera, then in an abandoned convent, and finally (1803) back to their original seat in Via Manzoni.
Today, the Martinitt (and the Stelline orphanage for girls) have merged into a wider social care institution called Pio Albergo Trivulzio.