Trevelyan Cove or Blight Harvey's (EN) / Trevelyan Cove or Blight Harvey's Cove (KW)

Parish: 
Hundred: 
Elements: 

Blight Harvey

This refers to the name of a person: 
name

porth

Meaning: 
cove, gate, harbour

Trevelyan

This refers to the name of a person: 
name
Elements notes: 
porth 'cove, harbour' + Trevelyan family name + Blight Harvey personal name