A person's first name or Christian name - given to them at birth. Precedes their surname.

GN a single nominal form that normally refers to some human being, being an arbitrary name assigned at or near birth, ¶11-3-1. A g.n. is an element of the forename or first name.

the name that precedes the surname

a first name like Robert or Sarah or Phineas, generally assigned to a person by the parents at birth

a name that is assumed by a person at birth and is not a family name

a personal name (such as Caitlin, Rhys, Wulfric, or Elizabeth) which your parents would give you

is the first name of an individual.

Name given to a person at birth or baptism, one’s first and middle names.

one's first name given at birth or baptism.

A name before a family name; a first name or forename.

The name parents give their child at birth.

Person’s first or middle name

A given name is a name which specifies and differentiates between members of a group of individuals, especially a family, all of whose members usually share the same family name. A given name is a name given to a person, as opposed to an inherited one – such as a family name"A name given to a person at birth or at baptism, as distinguished from a surname." according to the http://www.yourdictionary.com/ahd/g/g0136100.html American Heritage Dictionary. So, strictly speaking, the term excludes names acquired by other means – such as changing one's name.