Minnetta, derived from Minnie andetta, is an uncommon but intriguing given name. It is believed to have originated as a variant of Minerva, the Roman goddess of wisdom and strategic warfare. The name Minnetta is thought to have been particularly popular in the United States during the late 19th and early 20th centuries.
"Minnetta peaked in popularity during the early 20th century, with a total of 69 babies named Minnetta born between 1906 and 1951. The name's most popular years were 1917 and 1922, each with 10 births."