Today is the Memorial of St. Charles Lwanga and Companions (d. 1886), the companions numbering twenty-one other Ugandan martyrs. They are the first martyrs of Sub-Saharan Africa and true witnesses of the Christian faith. Charles Lwanga, a catechist and a young leader, was martyred in 1886 with a group of Catholic and Anglican royal pages, some of whom were not yet baptized. King Mwanga, who despised the Christian religion, gave orders that all the Christian pages in his service be laid upon a mat, bound, placed onto a pyre and burnt. This took place at Namugongo, just outside Kampala.

Today is the Optional Memorial of Saints Marcellinus and Peter (d. 304) who were two Roman martyrs who suffered under the Diocletian persecution. The first was an exorcist, the second a priest. Their cultus was so important that after peace was restored to the Church, Constantine built a basilica in their honor. Their names are mentioned in the Canon of the Mass (Eucharistic Prayer I).

Today is the Memorial of St. Justin, apologist and martyr (c. 100-165), who was one of the most important Christian writers of the second century. Justin himself tells how his study of all the schools of philosophy led him to Christianity, and how he dedicated his life to the defense of the Christian faith as "the one certain and profitable philosophy."