[Processor's note: this timeline and the one that follows appeared in the opposite order in the 1905 edition on which this etext is based. Their order has been reversed to correctly reflect the order in which they appear in the table of contents.]

1347. On March 25th, Catherine, and a twin-sister who dies at once, are born in the Strada dell' Oca, near the fountain of Fontebranda, Siena. She is the youngest of the twenty-five children of Jacopo Benincasa, a dyer, and Lapa, his wife.

1353-4. As a child, Catherine is peculiarly joyous and charming. When six years old she beholds the vision of Christ, arrayed in priestly robes, above the Church of St. Dominic. She is inspired by a longing to imitate the life of the Fathers of the desert, and begins to practise many penances. At the age of seven she makes the vow of virginity. She is drawn to the Order of St. Dominic by the zeal of its founder for the salvation of souls.

1359-1363. Her ascetic practices meet with sharp opposition at home. She is urged to array herself beautifully and to marry, is denied a private chamber, and forced to perform the menial work of the household, etc. In time, however, her perseverance wins the consent of her father and family to her desires.

1363-1364. She is vested with the black and white habit of Saint Dominic, becoming one of the Mantellate, or Dominican tertiaries, devout women who lived under religious rule in their own homes.

1364-1367. She leads in her own room at home the life of a religious recluse, speaking only to her Confessor. She is absorbed in mystical experiences and religious meditation. During this time she learns to read. The period closes with her espousals to Christ, on the last day of Carnival, 1367.

1367-1370. In obedience to the commands of God, and impelled by her love of men, she returns gradually to family and social life. From this time dates her special devotion to the Blessed Sacrament. She joyfully devotes herself to household labours, and to a life of ministration to the sick and needy. In 1368 her father dies, and the Revolution puts an end to the prosperity of the Benincasa family, which is now broken up. Catherine seems to have retained to the end the care of Monna Lapa. In 1370 she dies mystically and returns to life, having received the command to go abroad into the world to save souls.

1370-1374. Her reputation and influence increase. A group of disciples gathers around her. Her correspondence gradually becomes extensive, and she becomes known as a peacemaker. At the same time, her ecstasies and unusual mode of life excite criticism and suspicion. In May, 1374, she visits Florence, perhaps summoned thither to answer charges made against her by certain in the Order. She returns to Siena to minister to the plague-stricken. She meets at this time Fra Raimondo of Capua, her Confessor and biographer. Her gradual induction into public affairs is accompanied by growing sorrow over the corruptions of the Church.

1375. At the invitation of Pietro Gambacorta, Catherine visits Pisa. Her object is to prevent Pisa and Lucca from joining the League of Tuscan cities against the Pope. She meets the Ambassador from the Queen of Cyprus, and zealously undertakes to further the cause of a Crusade. On April 1st she receives the Stigmata in the Church of Santa Cristina; but the marks, at her request, remain invisible. She prophesies the Great Schism. A brief visit to Lucca.

1376. Catherine receives Stefano Maconi as a disciple, and at his instance reconciles the feud between the Maconi and the Tolomei. She attempts by correspondence to reconcile Pope Gregory XI. and the Florentines. On April 1st the Divine Commission to bear the olive to both disputants is given her in a vision. In May, at the request of the Florentines, she goes to Florence. Sent as their representative to Avignon, she reaches that city on June 18th. Gregory entrusts her with the negotiations for peace. The Florentine ambassadors, however, delay their coming, and when they come refuse to ratify her powers. Thwarted in this direction, she devotes all her efforts to persuading the Pope to return to Rome, and triumphing over all obstacles, succeeds. She leaves for home on September 13th, but is retained for a month in Genoa, at the house of Madonna Orietta Scotta. After a short visit at Pisa, she reaches Siena in December or January.

1377. Catherine converts the castle of Belcaro, conveyed to her by its owner, into a monastery. She visits the Salimbeni in their feudal castle at Rocca D'Orcia, for the purpose of healing their family feuds. While here she learns miraculously to write. She also visits Sant' Antimo and Montepulciano.

1378. Gregory, in failing health, perhaps regretting his return, becomes alienated from Catherine. He sends her, however, to Florence, where she stays in a house built for her by Niccolo Soderini, at the foot of the hill of St. George. She succeeds in causing the Interdict to be respected, but almost loses her life in a popular tumult, and keenly regrets not having won the crown of martyrdom. After the death of Gregory, and the establishment of the longed-for peace by Pope Urban, Catherine returns to Siena, where she devotes herself to composing her "Dialogue." After the outbreak of the Schism, Urban, whom she had known at Avignon, summons her to Rome. She reluctantly obeys, and takes up her abode in that city on November 28th, accompanied by a large group of disciples, her "Famiglia," who live together, subsisting on alms. From this time Catherine devotes her whole powers to the cause of Urban. She is his trusted adviser, and seeks earnestly to curb his impatient temper on the one hand, and to keep the sovereigns of Europe faithful to him on the other. She writes on his behalf to the Kings of France and Hungary, to Queen Giovanna of Naples, to the magistrates of Italian cities, to the Italian cardinals who have joined the Schism, and to others. Fra Raimondo, despatched to France, to her grief and exaltation, evades his mission through timidity, to her bitter disappointment, but does not return to Rome till after her death. Catherine's health, always fragile, gives way under her unremitting labours and her great sorrows.

1380. Catherine succeeds in quieting the revolt of the Romans against Urban. She dedicates herself as a sacrificial victim, in expiation of the sins of the Church and of the Roman people. In vision at St. Peter's, on Sexagesima Sunday, the burden of the Ship of the Church descends upon her shoulders. Her physical sufferings increase, and on April 30th she dies, in the presence of her disciples.