The Iste Confessor text should be "Hac die lætus méruit beátas Vúlnera Christi" for the feast of the Impression of the Stigmata on the body of Saint Francis. Confirmed in my DA breviary and my 1910 Tridentine diurnal (I assume but can't confirm for the moment via the Internet Archive that this is the same for the other Tridentine variants).
The Iste Confessor text should be "Hac die lætus méruit beátas Vúlnera Christi" for the feast of the Impression of the Stigmata on the body of Saint Francis. Confirmed in my DA breviary and my 1910 Tridentine diurnal (I assume but can't confirm for the moment via the Internet Archive that this is the same for the other Tridentine variants).