Life and Asceticism
Both saints belonged to the monastic community of the Kiev Caves Lavra and pursued their ascetic struggle in the Near Caves, the caves associated with Saint Anthony, as distinguished from the Far Caves of Saint Theodosius within the same monastic complex. Onuphrius is recorded as an ascetic of the Near Caves in the twelfth century; Onesimos, placed in the twelfth or thirteenth century, enclosed himself there as a recluse.
Their epithets describe their chosen forms of asceticism rather than narrating particular events. Onuphrius held to silence as a spiritual discipline, and Onesimos lived shut away from the world in reclusion. The sources do not preserve a connected biography for either saint.