September is a feminine given name derived directly from the name of the ninth month. Though now observed as September, the month's name originates from Latin septem, meaning "seven," for it was the seventh month of the ancient Roman calendar before January and February were later added. As a first name, it is occasionally chosen for girls born in September, linking the child's identity to the seasonal transition and new academic rhythms of autumn.
Etymology
The word September entered English via Old French Septembre from Latin September (also September), literally "the seventh month." This naming convention, where numerical months do not align with their modern positions, reflects the reforms of Numa Pompilius around 700 BCE and later the Julian calendar modification. The original Roman calendar, attributed to Romulus, had ten months, with March as the first.
Cultural and seasonal associations
As a name, September evokes the characteristics of its month: harvest time in the Northern Hemisphere, cooler weather after summer, and the start of the school year. In the Eastern Orthodox Church, September begins the ecclesiastical year. The month is also shared by two zodiac signs: Virgo (ending on September 22) and Libra (beginning September 23). While the name remains rare—classed as an English usage—it fits within a tradition of month-based names such as April, June, and August.
Sources: Wikipedia — September