Cousins Sister
A cousin's sister is a female individual who shares common ancestors with an individual, but is not a sibling or daughter of that person. She is a part of the extended family network, specifically a member of one's cousin's immediate family. The relationship between a person and their cousin's sister can be established through various familial configurations, such as when two siblings from one family have children who then marry into different families. In this scenario, the sisters of each respective spouse become cousins to each other, and their children are double cousins. Understanding the connection to a cousin's sister is important for mapping out complex family relationships, especially in large or close-knit families.