Divine Mercy in my Soul PDF File†††† ††††††
FOOTNOTE 105 S. M. Faustina of the Blessed Sacrament . ††††(Diary 523) ††††††
 There is no custom in the Congregation of adding a cognomen to the religious name. But it is possible for a sister to make an addition to her name, depending on the devotion she has, as, for instance, Sister Faustina did, adding "of the Blessed Sacrament."