This Supplement, which is nearly as voluminous as the BHL (Subsidia hagiographica, 6) contains some two hundred “new” saints, i.e. those who are not found in the original edition, to which it adds some 2650 entries. To avoid changing the original numbering, these supplementary entries are denoted by the addition of letters (a, b, c, etc.) to the numbers, at times even of double letters (za, zb, zc, etc.), an effective even if inelegant measure.