Robert Guérin du Rocher should not be confused with Petrus Guérin du Rocher.
| Honorific Prefix: | Blessed |
| Robert Guérin du Rocher | |
| Birth Date: | 25 September 1736 |
| Feast Day: | September 2 |
| Venerated In: | Catholic Church |
| Birth Place: | Repas, France |
| Death Place: | Carmes Prison,Paris, France |
| Beatified Date: | 17 October 1926 |
| Beatified Place: | Saint Peter's Basilica, Kingdom of Italy |
| Beatified By: | Pope Pius XI |
Robert Guérin du Rocher was born in Repas in 1736.[1] He was the younger brother of Petrus and like his brother became a Jesuit priest.[2]
He did missionary work in the Middle east and eventually settled as a pastor in Salonika, before being expelled by the Ottomans.[3] On returning to France he bacmae spiritual director for the Sisters of the Visitation in Paris.[3]
On 2 September 1792 he was one of the priests, along with his older brother Petrus killed by a mob in the September Massacres.[4] [3] 134 years later he and his fellow Holy September Martyrs were beatified by Pope Pius XI in October 1926[5]