Edward the Martyr was an English king who ruled from 975 to 978 AD. He was the son of King Edgar and Queen Wulfrun, and he became king at a young age after his father's death. His reign was short-lived, as he faced opposition from his half-brother, Aethelred, who later became king. Edward was known for his piety and commitment to the Christian faith. He was murdered in 978, and his death led to his veneration as a martyr. He was later canonized by the Catholic Church, and his feast day is celebrated on March 18.