What is First name, last name and mother's maiden name ?

I have seen people getting confused about naming conventions in applications, etc. Here is brief discussion about standard naming convention...

Last name indicates the family to which the person belongs, also called as family name. Depending on the culture, family name may appear in last part of a person's name or in first part of the person's name.

First name is a name given to a person, as opposed to an inherited one such as a family name.

Mother's maiden name is family name of the mother prior to her marriage. And "married name" is name after her marriage. Lot of firms use "mother's maiden name" as a kind of password.