Toponymy
The -bath element in this place-name, not recorded before 1791, is easily accounted for: the Old English bæth signified "water, a pool". The identity of Simon is less sure. R.J. King pointed out that the name is frequently met with in the West of England, "especially in connection with old boundary lines". Thomas Westcote, in his View of Devonshire in 1630, preserved a local tradition that "Simon" was a great hunter and Robin Hood-like figure who had his stronghold at Symonsburrow, at the highest point of the Blackdown Hills, a barrow that pre-dates even a medieval legend associated with it.
Read more about this topic: Simonsbath