In some cultures, a surname, family name, or last name is the portion of one's personal name that indicates one's family, tribe or community.
Practices vary by culture. The family name may be placed at either the start of a person's full name, as the forename, or at the end; the number of surnames given to an individual also varies. As the surname indicates genetic inheritance, all members of a family unit may have identical surnames or there may be variations; for example, a woman might marry and have a child, but later remarry and have another child by a different father, and as such both children could have different surnames. It is common to see two or more words in a surname, such as in compound surnames. Compound surnames can be composed of separate names, such as in traditional Spanish culture, they can be hyphenated together, or may contain prefixes.
Using names has been documented in even the oldest historical records. Examples of surnames are documented in the 11th century by the barons in England. Surnames began as a way of identifying a certain aspect of that individual, such as by trade, father's name, location of birth, or physical features. It was not until the 15th century that surnames were used to denote inheritance.