He was born in Valencia and joined the Dominicans at the age of 17. In 1399, with the approval of the Pope, he set out on his mission as a preacher. For twenty years he travelled through western Europe, with thousands flocking to hear him wherever he was. From 1408 he worked mostly south of the Pyrenees. Among others, he preached to the Jews, of whom some 25,000 were converted to Christianity; and in the Kingdom of Granada he converted thousands of Moors. In 1417 he moved on to Brittany and continued his work there: he died in Vannes in Brittany on 5 April 1419. See the articles in Wikipedia and the Catholic Encyclopaedia.

Violet is a dark colour, ‘the gloomy cast of the mortified, denoting affliction and melancholy’. Liturgically, it is the colour of Advent and Lent, the seasons of penance and preparation.