Almedha was a religious leader and virgin martyr who lived in the Kingdom of Brycheiniog during the 5th or 6th century. A daughter of King Brychan, she embraced Christianity and fled her home to avoid a forced marriage to a pagan prince. After being rejected by several local communities, she eventually sought refuge at Slwch Tump. Her life ended when her pursuer caught and beheaded her, an event that reportedly caused a healing spring to emerge from the ground where her head struck a stone.