Rosenannon ()Place-names in the Standard Written Form (SWF) : List of place-names agreed by the MAGA Signage Panel. Cornish Language Partnership. is a hamlet in Cornwall, England, United Kingdom. It is within the civil parish of St Wenn, south-west of the town of Wadebridge.Ordnance Survey: Explorer map sheet 106 Newquay & Padstow
Rosenannon Downs is a nature reserve to the north of the hamlet owned and managed by the Cornwall Wildlife Trust.
History Although there are no listed buildings in Rosenannon village, Borlase Farmhouse and Borlase Burgess Farmhouse which are west of the village, are both Grade II listed.
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