Marie Van Brittan Brown was born in Queens, New York. Details about her parents and immediate family during this early period are limited, but the location of her birth is a key element in understanding her later life in the same area.

This period marks Marie's transition into adulthood. Specific details regarding her early career or educational pursuits remain unconfirmed, but this era is notably marked by her marriage to Albert Brown. Their union becomes central to the development and patenting of her home security system.

During this time, Marie and Albert likely established their home and family life in Queens. This is the period where the need for a security system likely arose, driven by their work schedules and concerns about rising crime rates in their neighborhood.