Attested: RC Morionio
Where: Brent Knoll, a prominent isolated hill on the north of the Somerset Levels, topped by a fort with possible Roman archaeological traces, at ST340509.
Name origin: PIE *mori- in ancient place names generally referred to marshes and other forms of inland water rather than to the wider sea like Welsh môr. The ending –onium was a fairly general way of forming nouns in Latin.
Notes: Brent Knoll (compare Brentford, which was probably Roman Brinavis) used to be surrounded by marshes, which were reclaimed in Roman times. On its south side was a river named after Roman times as Siger, which may have originally carried the flow of the river Brue. See here for a general discussion of Somerset's ancient names.
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Last Edited: 19 May 2018