X00 First indicator:  Value 1 - Surname

Value 1 indicates that the heading is a surname formatted in inverted order (surname, forename; e.g., Smith, John) or 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.

Examples:

100  1#  $aOlearius, Adam,$d1603-1671

400  1#  $aOlearius,$cHerr$q(Adam),$d1603-1671

[Name without forename known to be a surname.]

400  1#  $aO., A.$q(Adam Olearius),$d1603-1671

100  1#  $aDe Angelini, Anna

400  1#  $aAngelini, Anna de

100  1#  $aAllsworth-Jones, P.

400  1#  $aJones, P. Allsworth-

100  1#  $aAlderwerelt van Rosenburgh, C. R. W. K. van$q(Cornelis Rugier Willem Karel),$d1863-1936

400  1#  $aVan Alderwerelt van Rosenburgh, C. R. W. K.$q(Cornelis Rugier Willem Karel),$d1863-1936

100  1#  $aMcCoy, Hal

100  1#  $aO'Brien, Gerard

400  1#  $aS., Anton D.

100  1#  $aAleixandre Ferrandis, V.

100  1#  $aHinojosa-S., Rolando R.

100  1#  $aDigby of Geashill, Frances Noel Digby,$cBaroness,$d1660 or 61-1684

100  1#  $aMateu y Llopis, Felipe,$d1901-

100  1#  $aSan Román, Teresa

100  1#  $aEl Saffar, Ruth S.,$d1941-