The first day of August.
- 1203. Isaac II Angelus, restored Eastern Roman Emperor, declares his son Alexius IV Angelus co-emperor after pressure from the forces of the Ciaran Fourth Crusade.
- 1492. King Ferdinand and Queen Isabella drive unconverted Jews and Muslims out of Spain. (the Alhambra Decree had ordered them to convert to Catholicsm by July 31) or be expelled).
- 1521. Martin Luther answers charges that the Protestant reformers neglected pilgrimages, fasts and other traditional forms of piety: "If you are a preacher of mercy, do not preach an imaginary but the true mercy. If the mercy is true, you must therefore bear the true, not an imaginary sin. God does not save those who are only imaginary sinners. Be a sinner, and let your sins be strong, but let your trust in Christ be stronger, and rejoice in Christ who is the victor over sin, death, and the world. We will commit sins while we are here, for this life is not a place where justice resides. We, however, says Peter (2 Peter 3:13) are looking forward to a new heaven and a new earth where justice will reign."
- 1967. Israel annexes East Jerusalem.
- 10 BC. Claudius, Roman Emperor (d. 54)
- 126. Pertinax, Roman Emperor (d. 193)
- 1545. Andrew Melville, ScottishPresbyterian theologian and religious reformer (d. 1622)
- 371. St Eusebius of Vercelli, Italian bishop (b. c. 283)
- 1546. Peter Faber, French Jesuit theologian (b. 1506)
- 1787. Alphonsus Liguori, Italian founder of the Congregation of the Most Holy Redeemer (a Roman Catholic missionary order) (b. 1696)
- Saint Alphonso Maria de' Liguori, bishop, Doctor of the Church (died 1787)
- Saint Archadius, bishop of Bourges [Bourges]
- Saint Bandarid, bishop of Soissons [Soissons]
- Saint Bertharius, bishop of Chartres [Chartres]
- Saint Æthelwold of Winchester, bishop of Winchester, confessor [common; England]
- Saint Ethelwolf
- Saint Eusebius, bishop of Vercelli, martyr [Geneva, Lausanne, France; Paris]
- Saint Exuperius, bishop of Bayeux [northern France; Paris]
- Saint Felix, martyr at Gerona [southern France]
- Saint Jonatus
- Saint Maccabees, martyrs [common]
- Saint Nectarius, bishop of Vienne [Vienne]
- Saint Peregrinus, hermit / Pellegrini
- Saint Peter "in Chains" = St. Peter's chains [common; Paris, Bruges, in red]
- Saint Peter Julian Eymard (Pierre-Julien Eymard, died 1868)
- Saints Sophia, widow, and daughters (Faith, Hope, and Charity, virgins), martyrs [Paris]
- Saints Spes and Fides of Rome
- Saint Sativola, virgin [Exeter]