Catherine was born in Siena in 1347, one of a very large family. ¹² At sixteen, moved by a vision of Saint Dominic, she joined the Mantellate - the women's branch of the Dominican third order - which meant she took on a religious rule while continuing to live at home. ¹ She was never a cloistered nun.

She gave herself to "prayer, penance and works of charity, especially for the benefit of the sick." ¹ The hospital work came first and the public life grew out of it, not the other way round.

Catherine dictated a very large correspondence, the Epistolario, alongside her Dialogue and her Prayers. ¹ The letters go to popes, monarchs, mercenaries, prisoners and relatives, and their tone is remarkably consistent: direct, affectionate, and entirely unimpressed by rank.

For most of the fourteenth century the popes had lived at Avignon rather than Rome. Catherine "energetically and effectively urged" Gregory XI to return. ¹ He did, in 1377.

It is worth being clear about who was doing the urging: a woman in her late twenties with no formal education, no office, and no institutional standing whatever, pressing the Pope to reverse seventy years of practice. She was right, and he listened.

Her masterpiece is the Dialogue of Divine Providence, in which Christ is described as a bridge between heaven and earth, with three stairways to be climbed. ¹ It is a book about how a person actually gets from where they are to God, written by someone who assumed the question was practical.

Her prayer has a particular note that Benedict XVI quotes: "Out of mercy you have washed us in his Blood... O mercy! My heart drowns in thinking of you." ¹

She died in Rome in 1380, aged thirty-three, was canonized in 1461, declared a Doctor of the Church by Paul VI in 1970 - with Teresa of Avila, the first two women given that title - and named Co-Patroness of Europe by John Paul II. ¹²

Catherine of Siena is a patron saint of Europe and of Italy. ² The European patronage is the substantive one: she is held up as a figure who called the continent's central institution back to its own responsibilities.

The feast of Saint Catherine of Siena is celebrated on April 29. ²

When you have no standing and something needs saying. Catherine had none and said it anyway, to the Pope. ¹ Her authority came from her prayer life and her obvious love for the Church, not from a position, and that is available to you.

When you think holiness requires leaving ordinary life. She lived at home, in her family, in a third order. ¹ The most consequential laywoman of the fourteenth century never entered a cloister.

When your prayer and your work feel like separate lives. Hers were one thing: the nursing of the sick and the letters to kings came out of the same place. ¹ Franciscan Media puts the takeaway as "holiness as a goal to be sought over the course of a lifetime" ² - a direction, not a department.

When you need to be told that mercy is real. "O mercy! My heart drowns in thinking of you." ¹ Catherine is not restrained about this, and if you find God's forgiveness abstract, her language is the antidote.

When you are young and in a hurry. She did all of it and was dead at thirty-three. ¹ That is not a reason for panic; it is a reason to start.