What is the origin (or meaning) of surname FOLLY in Cornwall?

Question

What is the origin (or meaning) of surname FOLLY in Cornwall?

Answer 1

This is one possible origin :-

Folley Name Meaning and History

habitational name from any of the minor places in Wiltshire, Warwickshire, and other counties called (The) Folly, usually from Middle English folie in the sense ‘folly’, ‘foolish enterprise’, but otherwise from Old French feuillie ‘leafy bower or shelter’, later ‘clump of trees’. In some cases, the name may be topographic.

nickname for an eccentric or foolish person, from Old French folie ‘foolishness’.

And another

The surname Foley is the anglicised form of the Irish name Ó Foghladha, (from foghladha meaning a plunderer). The Foleys were a sept of Co. Waterford who spread into nearby counties Cork and Kerry. The name Ó Foghladha was sometimes phonetically as Fowloo or Fowler

In Ulster the surname MacSharry was sometimes anglicised to Foley. In 1890, the surname Foley was most commonly found in counties Kerry, Cork, Waterford and Dublin.