| 1792-09-02 Bls. John Francis Burte, a Conventual priest, and Apollinaris of Posat, a Capuchin friar, were martyred by the French Revolutionary government for refusing to take the "Oath of Citizenship", in Paris, France. |
| 1224-09-10 Franciscan friars first arrived in England, led by Bl. Agnellus of Pisa. |
| 2001-09-11 Fr. Mychal Judge, an Observant Franciscan and chaplain for the New York City Fire Department, was killed during the terrorist attack on the World Trade Center, New York City, NY (USA). |
| 1224-09-14 St. Francis of Assisi received the Sacred Stigmata on Mt. La Verna. |
| 1252-09-16 Cardinal Rainaldo di Segni, the then-Cardinal Protector of the Poor Ladies and future Pope Alexander IV, officially approved the Rule of St. Clare. It received final approval from Pope Innocent IV in 1253. |
| 1663-09-18 St. Joseph of Cupertino, a Conventual priest and mystic, died in Osimo. |
| 1220-09-22 Pope Honorius III issued the papal bull Cum secundum consilium which mandated that candidates for profession in the Franciscan Order must first have a novitiate of one year prior to profession. |
| 1981-09-23 The General Extraordinary Chapter for the Conventual Franciscans held in the Sacro Convento in Assisi approved the canonical establishment of the Province of St. Joseph of Cupertino, in California (USA). |
| 1222-09-24 St. Anthony of Padua preaches at an ordination ceremony for fellow friars in Forli, Italy. As a result, he is conferred with the office of preacher and sent to preach throughout the territory of the Province. |
| 1997-09-26 A severe earthquake near Assisi, Italy caused serious damage to the Basilica of St. Francis and the Sacro Convento. Conventual friar Angelo Api, Polish-born postulant Zdzilaw Borowiec and two others were killed by falling debris in the Basilica as they were inspecting damage from the previous quake, when aftershocks caused part of the ceiling to collapse upon them. Today is the 10th anniversary of this event. |
| 1230-09-28 Pope Gregory IX issued the papal bull Quo elongate which marks the first time the Pope intervened in questions about the interpretation of the 1223 Rule of St. Francis. The Testament of St. Francis is declared a non-binding document, and there was a distinction made between the "use" and the "possession" of the goods of the Order. |
| 1220-09-29 St. Francis of Assisi resigned as leader of the Order of Friars Minor at the General Chapter of the Portiuncula. He was replaced by Peter of Catanio. |
| 1221-09-29 Caesar of Speyer leads a group of Franciscan missionaries to Germany. |
| 1228-09-17 Pope Gregory IX renews the right of St. Clare of Assisi to embrace the "Privilege of Poverty", the right not to own anything as a religious community or individually. |
| 1774-09-22 Pope Clement XIV, a Conventual Franciscan, died. He is entombed at the Basilica of the Holy Apostles, Rome, Italy. |
| 1866-09-17 St. Francis Mary of Camporosso, a Capuchin religious, died from the effects of an epidemic, in Genoa, Italy. |
| 1622-09-12 Bl. Apollinaris Franco, an Observant Franciscan, was martyred for the faith with Franciscan and Jesuit companions, in Nagasaki, Japan |
| 1791-09-25 Mission Santa Cruz was founded by Spanish Franciscan friars Frs. Fermin Lasuen and his companions, Santa Cruz, CA.(USA) |
| 1772-09-01 Mission San Luis Obispo was founded by Franciscan missionary Bl. Junipero Serra, San Luis Obispo, CA. (USA) |
| 1771-09-08 Mission San Gabriel was founded by Franciscan missionary Bl. Junipero Serra, San Gabriel, CA. (USA) |
| 1797-09-08 Mission San Fernando was founded by Franciscan missionary Fr. Fermin Lasuen, San Fernando, CA. (USA) |
| 1804-09-17 Mission San Inez was founded by Franciscan missionary Fr. Estevan Tapis, Santa Ines, CA. (USA) |