Born in 1568 the Jesuit saint Aloysius Gonzaga (in Spanish Luis Gonzaga) died on 21 June 1591.  Born of a noble family in Italy, Aloysius overcame the opposition of his family and became a Jesuit novitiate in Rome in 1585.  When the city experienced a plague epidemic the Jesuits opened a hospital, and Aloysius, whose health had never been good, devoted himself to caring for the sick, until he too became sick and died.  He was canonised in 1726, and declared patron of youth in 1729.

The card here, purchased from a stall which sells old postcards in Madrid in August 2022, depicts St Aloysius contemplating a crucifix and holding a lily, Lilium candidum, a symbol of chastity, or purity.