Donatus Magnus
Donatus Magnus, also known as Donatus of Casae Nigrae, became leader of a schismatic Christian sect known as the Donatists in North Africa. He is believed to have died in exile around 355.
Life
Little is known of his earlier life because of the complete loss of his correspondence and written works. He first appears in Church records as Donatus of Casae Nigrae in October 313 when Pope Miltiades found him guilty of re-baptizing clergy who had lapsed and of forming a schism within the Church.
Casae was a settlement located on the extreme southern edge of the plains of Numidia, south of Theveste, an area settled by people predominantly of Berber descent.
These events may have taken place before Donatus arrived in Carthage, probably before 311.
Donatus was consecrated in 313 AD as Bishop of Carthage and Primate of North Africa, the leader of the Christian sect which came to be known as the Donatist sect, even though Donatus was not the founding leader, but rather followed the founding leader Majorinus.