X00 Subfield $d - Dates associated with a name:
Subfield $d contains dates of birth, death, or flourishing or any other date used with a name. A qualifier used with the date (e.g., b., d., ca., fl., ?, cent.) is also contained in subfield $d.
Examples:
100 1#$aLobb, Theophilus,$d1678-1763
100 1#$aLuckombe, Philip,$dd. 1803
100 1#$aSirillo, Solomon ben Joseph,$dd. ca. 1558
100 1#$aMalalas, John,$dca. 491-ca. 578
100 1#$aMarcellus, Marcus Claudius,$dd. 45 B.C.
100 1#$aLevi, James,$dfl. 1706-1739
100 0#$aJoannes Aegidius,$cZamorensis,$d1240 or 41-ca. 1316
400 1#$aCompton, Winny,$db. 1787