Saint Amphibalus is a Christian martyr and saint, traditionally associated with the early church in Britain. He is often depicted as a companion of Saint Alban, the first British martyr, who was executed for his faith. Amphibalus is believed to have been a priest who helped Alban during his time of persecution. His feast day is celebrated on June 22, and he is venerated in various Christian traditions. The name "Amphibalus" is thought to derive from the Latin word for "cloak," reflecting his role in providing shelter and protection to Alban. His story highlights themes of faith, sacrifice, and the spread of Christianity in Roman Britain.