Penmayne is a hamlet next to Splatt in the civil parish of St Minver Lowlands in north Cornwall, England, UK.
Map of Penmayne, Wadebridge, UK
In the Middle Ages Penmayne (a sub-manor of Helston-in-Trigg) was one of the Antiqua maneria (ancient manors), the original 17 manors belonging to the Earldom of Cornwall.
References
Penmayne Wikipedia(Text) CC BY-SA