Decumanus

Decumanus (or Degeman) was a Welsh saint, who lived a hermit on the seashore at the place called from him St. Decuman's, near Watchet, in Somersetshire. His well was long pointed out there, and a chapel existed in the parish of Wendron, near Helstone, in Cornwall, which was dedicated to him. He is said to have died August 27, 706.