A child confessor of Nicomedia
Nicomedia, the eastern capital of the empire under Diocletian, was a principal scene of the great persecution that opened in the first years of the fourth century, and a number of its martyrs are gathered on September 3. Basilissa belongs to this Nicomedian cluster, though her account is distinguished by her extreme youth and by the unusual outcome of her trial: rather than ending in execution, the synaxarion presents her sufferings as the occasion of her persecutor's conversion.
The tradition emphasizes that the power displayed in her preservation, not any eloquence of her own, moved the governor to faith. In this respect her story belongs to a recognizable type within the martyr literature, in which the steadfastness and miraculous deliverance of a young confessor become the means by which an official or executioner is brought to confess Christ.