St. Francis of Assisi!

Giovanni di Pietro di Bernardone, better known as Saint Francis of Assisi (Italian: Francesco d'Assisi; c. 1181 – 3 October 1226), was a mystic Italian Catholic friar, founder of the Franciscans, and one of the most venerated figures in Christianity. In 1223, he arranged for the first Christmas live nativity scene. Pope Gregory IX canonized him on 16 July 1228. Francis later became associated with patronage of animals and the natural environment. It became customary for churches to hold ceremonies blessing animals on his feast day of 4 October.
In 1219, he went to Egypt in an attempt to convert the sultan al-Kamil and put an end to the conflict of the Fifth Crusade. He founded the men's Order of Friars Minor, the women's Order of St. Clare, the Third Order of St. Francis and the Custody of the Holy Land. Once his community was authorized by the Pope, he withdrew increasingly from external affairs.
Francis is known for his devotion to the Eucharist. According to Christian tradition, in 1224 he received the stigmata during the apparition of a Seraphic angel in a religious ecstasy. Along with Catherine of Siena, he was designated patron saint of Italy.
Francis of Assisi was born in late 1181 or early 1182, one of several children of an Italian father, Pietro di Bernardone dei Moriconi, a prosperous silk merchant, and a French mother, Pica de Bourlemont, about whom little is known except that she was a noblewoman originally from Provence. Pietro was in France on business when Francis was born in Assisi, and Pica had him baptized as Giovanni. Upon his return to Assisi, Pietro took to calling his son Francesco ("Free man", "Frenchman"), possibly in honor of his commercial success and enthusiasm for all things French.
Indulged by his parents, Francis lived the high-spirited life typical of a wealthy young man. As a youth, Francesco became a devotee of troubadours and was fascinated with all things Transalpine. He was handsome, witty, gallant, and delighted in fine clothes. He spent money lavishly. Although many hagiographers remark about his bright clothing, rich friends, and love of pleasures, his displays of disillusionment toward the world that surrounded him came fairly early in his life, as is shown in the "story of the beggar". In this account, he was selling cloth and velvet in the marketplace on behalf of his father when a beggar came to him and asked for alms. At the conclusion of his business deal, Francis abandoned his wares and ran after the beggar. When he found him, Francis gave the man everything he had in his pockets. His friends mocked him for his charity; his father scolded him in rage.
Around 1202, he joined a military expedition against Perugia and was taken as a prisoner at Collestrada, spending a year as a captive. An illness caused him to re-evaluate his life. Upon his return to Assisi in 1203, Francis returned to his carefree life. In 1205, Francis left for Apulia to enlist in the army of Walter III, Count of Brienne. A strange vision made him return to Assisi and lose interest in the worldly life. According to hagiographic accounts, thereafter he began to avoid the sports and feasts of his former companions. A friend asked him whether he was thinking of marrying, to which he answered: "Yes, a fairer bride than any of you have ever seen", meaning his "Lady Poverty"
On a pilgrimage to Rome, he joined the poor in begging at St. Peter's Basilica. He spent some time in lonely places, asking God for spiritual enlightenment. He said he had a mystical vision of Jesus Christ in the forsaken country chapel of San Damiano, just outside Assisi, in which the Icon of Christ Crucified said to him, "Francis, Francis, go and repair My church which, as you can see, is falling into ruins." He took this to mean the ruined church in which he was presently praying, and so he sold some cloth from his father's store to assist the priest there. When the priest refused to accept the ill-gotten gains, an indignant Francis threw the coins on the floor.
In order to avoid his father's wrath, Francis hid in a cave near San Damiano for about a month. When he returned to town, hungry and dirty, he was dragged home by his father, beaten, bound, and locked in a small storeroom. Freed by his mother during Bernardone's absence, Francis returned at once to San Damiano, where he found shelter with the officiating priest, but he was soon cited before the city consuls by his father. The latter, not content with having recovered the scattered gold from San Damiano, sought also to force his son to forego his inheritance by way of restitution. In the midst of legal proceedings before the Bishop of Assisi, Francis renounced his father and his patrimony. Some accounts report that he stripped himself naked in token of this renunciation, and the bishop covered him with his own cloak.
For the next couple of months, Francis wandered as a beggar in the hills behind Assisi. He spent some time at a neighbouring monastery working as a scullion. He then went to Gubbio, where a friend gave him, as an alms, the cloak, girdle, and staff of a pilgrim. Returning to Assisi, he traversed the city begging stones for the restoration of St. Damiano's. These he carried to the old chapel, set in place himself, and so at length rebuilt it. Over the course of two years, he embraced the life of a penitent, during which he restored several ruined chapels in the countryside around Assisi, among them San Pietro in Spina (in the area of San Petrignano in the valley about a kilometer from Rivotorto, today on private property and once again in ruin); and the Porziuncola, the little chapel of St. Mary of the Angels in the plain just below the town. This later became his favorite abode. By degrees he took to nursing lepers, in the lazar houses near Assisi.