Time Line 1878
- death of Blessed Pope Pius IX
- death of Blessed Mary of Jesus Crucified
- death of the physicist Antoine César Becquerel
- Pope Leo XIII’s encyclical, Inscrutabili dei consilio
- ascension of Gioacchino Pecci as Pope Leo XIII
- birth of Blessed Bernardina Maria Jablonska
- birth of Blessed Clemens August von Galen
- birth of Blessed Felipe Ripoll Morata
- birth of Blessed Jean Marie Cassant
- birth of Blessed Mary Assunta
- birth of Blessed Marie-Céline of the Presentation
- birth of Saint Gemma Galgani
- declaration of Saint Marguerite Bourgeous as Venerable
- elevation of the archdiocese of Glasgow, Scotland
- founding of the diocese Aberdeen, Scotland
- founding of the diocese of Middlesbrough, England
- founding of the Oblates of Saint Joseph
- founding of the Oblates of the Sacred Heart
- miraculous cure at Lourdes of Joachime Dehant
| 1877 | 1879 |
