Each person has an ethnicity, race he or she was born into, location he or she lives in, nationality, social class, religion and is male or female.
Each person also has a family of origin which has these same components. Each family has a race and ethnic background, a place ancestors were born, and each come from different religions and social classes. To make each family more important, a last name is given to identify them into the components listed. Counting and identifying each person you were related to make up your family of origin.