Martyrs of Carthage under Valerian

The Martyrs of Carthage under Valerian were a group of Christians including Montanus, Lucius, Flavian, Julian, Victoricus, Primolus, Rhenus, and Donatian. All were executed during the persecutions of the Roman Emperor Valerian in 259 AD.
Their feast day is 24 February.

Monks of Ramsgate account

The monks of St Augustine's Abbey, Ramsgate wrote in their Book of Saints,

Butler's account

The hagiographer Alban Butler wrote in his Lives of the Fathers, Martyrs, and Other Principal Saints under 24 February,
Sabine Baring-Gould gives a near-identical version of the above in his Lives Of The Saints.