|First Indicator||Second Indicator|
|Type of personal name entry element
0 - Forename
1 - Surname
3 - Family name
|100 - Undefined
# - Undefined
600 - Thesaurus
0 - Library of Congress Subject Headings
1 - LC subject headings for children's literature
2 - Medical Subject Headings
3 - National Agricultural Library subject authority file
4 - Source not specified
5 - Canadian Subject Headings
6 - Répertoire de vedettes-matière
7 - Source specified in subfield $2
700 - Undefined
# - Undefined
Name and title portions
Subject subdivision portion
Subelements occurring in personal name fields.
Guidelines for applying all content designators except the second indicator position are given in this section. A field-specific list of content designators and guidelines for applying the second indicator position are provided under the description for each specific X00 field.
First Indicator - Type of personal name entry element
Form of the entry element of the field. The values distinguish among forenames, surnames, and family names used as the entry element.
Heading begins with a forename or is a name consisting of words, phrases, initials, separate letters, or numerals that are formatted in direct order.
|700||0#$aR. M. B.
[Initials representing name are in direct order.]
[Uncertain whether name is a forename or surname.]
Heading is a surname formatted in inverted order (surname, forename) or is a name without forename(s) which is known to be a surname. If there is uncertainty that a name without forename(s) is a surname, the first indicator position contains value 0. Phrases, when formulated with inversion and an entry element similar to a surname are treated as a surname.
|100||1#$aMc Intosh, Paula.|
|700||1#$aEl-Abiad, Ahmed H.,$d1926-|
|700||1#$aVérez Peraza, Elena,$d1919-|
|700||1#$aSalamín C., Marcel A.|
Heading is the name of a family, clan, dynasty, house, or other such group. The name may be constructed in direct or inverted order.
Unique to the function of the personal name field. It is described under the following fields: 100 (Primary Name-Personal); 600 (Subject Added Entry-Personal Name); and 700 (Added Entry-Personal Name).
$a - Personal name
Personal name may be a surname and/or forename; letters, initials, abbreviations, phrases, or numbers used in place of a name; or a family name.
A parenthetical qualifying term associated with the name is contained in subfield $c, and a fuller form of name added as a qualifier is contained in subfield $q.
|100||1#$aWilliams, Martha E.|
$b - Numeration
Roman numeral or a roman numeral and a subsequent part of a forename. It is used only in a forename heading (first indicator, value 0).
$c - Titles and other words associated with a name
Titles and other words associated with a name, including qualifying information such as:
Fuller forms of names given in parentheses are given in subfield $q.
|100||1#$aRussell, John,$cmap maker.|
If the heading is a surname followed directly by a prefix without intervening forenames or forename initials, the prefix is contained in subfield $c to prevent its being treated as a forename in searching and sorting processes.
Multiple adjacent titles or words associated with a name are contained in a single subfield $c. Subfield $c is repeated only when words associated with a name are separated by subelements contained in other subfields.
$d - Dates associated with a name
Dates of birth, death, or any other date used with a name. A qualifier used with the date (e.g., b., d.) is also contained in subfield $d.
|100||1#$aRodgers, Martha Lucile,$d1947-|
$e - Relator term
Designation of function that describes the relationship between a name and a community information entity.
Relator codes, which also specify the relationship of a person to a community information entity, are contained in subfield $4.
$f - Date of a work [600/700]
Date of publication used with a title of a work in a name/title field.
$g - Miscellaneous information
Data element that is not more appropriately contained in another defined subfield.
$j - Attribution qualifier
Attribution information for names when the responsibility is unknown, uncertain, fictitious, or pseudonymous. Qualifiers should be used that follow the name of a known artist for the work.
$n - Number of part/section [600/700]
Number designation for a part/section of a work used with a title in a name/title field. It can also contain a number designation for a part/section of an event, program, etc. used with a title of an event, program, etc. in a name/title field. Numbering is defined as an indication of sequencing in any form, e.g., Part 1, Supplement A, Book two.
$p - Name of part/section [600/700]
Name designation of a part/section of a work used with a title in a name/title field. It can also contain a name designation of a part/section of an event, program, etc. used with a title of an event, program, etc. in a name/title field.
$q - Fuller form of name
More complete form of part of the name that is in subfield $a.
|100||1#$aGresham, G. A.$q(Geoffrey Austin)|
$s - Version [600/700]
Version, edition, etc., information used with a title of a work in a name/title field.
$t - Title [600/700]
Title page title of a work or the name of an event, program, etc. used in a name/title field.
$u - Affiliation
Affiliation or address of the personal name.
$v - Form subdivision 
Form subdivision that designates a specific kind or genre of material as defined by the thesaurus being used. Subfield $v is appropriate only when a form subject subdivision is added to a personal or family name to form an extended subject heading. Subfield $v is used for form terms when they function as indicated above. Subfield $x may be used if the terms function as general subdivisions. A form subdivision in subfield $v is generally the last subfield in the field. The subfield may be repeated if more than one form subdivision is used.
$x - General subdivision 
Subject subdivision that is not more appropriately contained in subfield $v (Form subdivision), subfield $y (Chronological subdivision), or subfield $z (Geographic subdivision). Subfield $x is appropriate only when a general topical subdivision is added to a name or a name/title.
$y - Chronological subdivision 
Subject subdivision that represents a period of time. Subfield $y is appropriate only when a chronological subject subdivision is added to a name or a name/title field.
$z - Geographic subdivision 
Geographic subject subdivision. Subfield $z is appropriate only when a geographic subject subdivision is added to a name or a name/title field.
|600||10$aFord, Gerald R.,$d1913-$xMuseums$zMichigan.|
$0 - Authority record control number or standard number
$2 - Source of heading or term 
MARC code that identifies the thesaurus or authority file that is the source list from which the heading or term in a Subject Added Entry field was assigned. It is used only when the second indicator position contains value 7 (Source specified in subfield $2). Code from: Subject Heading and Term Source Codes.
$4 - Relator code
MARC code that specifies the relationship between a name and a community information entity. More than one relator code may be used if the person has more than one function. Code from: MARC Code List for Relators. The code is given after the name portion in name/title fields.
Relator terms, which also specify the relationship of a person to a community information entity, are contained in subfield $e.
$6 - Linkage
$8 - Field link and sequence number
Ambiguous Headings - See Appendix D.
Punctuation - Fields 100, 600, and 700 end with a mark of punctuation or a closing parenthesis. If the final subfield is subfield $0, $2 or $4, the mark of punctuation or closing parenthesis precedes these subfields.
Name portion of a name/title field ends with a mark of punctuation. The mark of punctuation is placed inside a closing quotation mark.
Name or title portion followed by a subject subdivision does not end with a mark of punctuation unless the name or title portion ends with an abbreviation, initial/letter, or open date.
Spacing - Adjacent personal name initials/letters or an abbreviation for a name and an adjacent name or initial/letter are separated by one space.
|100||1#$aHyatt, J. B.|
|100||1#$aFlam, F. A.$q(Floyd A.)|
|700||1#$aEnschedé, Ch. J.|
No spaces are used in initials/letters that do not represent personal names. An abbreviation consisting of more than a single phrase is separated from preceding and succeeding words or initials/letters by one space.
Display Constant - Dash (-) that precedes a subject subdivision in an extended subject heading is not carried in the machine-readable record. It may be system generated as a display constant associated with the content of subfields $v, $x, $y, and $z.
Initial Articles - Initial articles (e.g., La) occurring at the beginning of name heading fields are usually omitted in most languages (except when the intent is to file on the article). Initial articles occurring at the beginning of the title and/or part portion of a name/title added entry (i.e., 600 and 700) are also omitted. Any diacritics and/or special characters occurring at the beginning of fields are retained. Note that such characters are usually ignored for purposes of sorting or filing.
In 1996, value 1 was redefined to include both single and multiple surnames.
In 2014, subfield $g was made repeatable.