Serenicus was a 7th-century Benedictine monk born to a noble family in Umbria. Seeking a life of penance and contemplation, he traveled to the province of Maine alongside his brother, Serenidus. After initially living as an ascetic hermit near Saulges, he eventually settled in the Orne region. There, he became an evangelist and established a monastery and a chapel dedicated to Saint Martin of Tours, which significantly influenced the local area.