Of the many sons of Vincent de Paul who have been exemplary in their vocation and evangelizers of the poor, some have been put forward for us to admire and take as a role model. Justin de Jacobis– the great apostle to the Abyssinian people (known today as the people of Eritrea and Ethiopia)– is one of these.
| 1800, 9 October | Born near Naples, Italy |
| 1818, 17 October | Entered the Seminary of the Congregation of the Mission |
| 1824, 12 June | Ordained priest |
| 1839, 24 May | Responsibility for the mission in Abyssinia and surrounding territories |
| 1860, 31 July | Died |
| 1939, 25 June | Beatified by Pope Pius XII |
| 1975, 26 October | Canonized by Pope Paul VI |
| 30 July | Feast day |