Porthoustock (EN) / Porth Ewstek (KW)

Parish: 
Hundred: 
Notes: 
The agreed spelling utilises the diphthong <Ew-> from the 1529 form Porthewstock.
Elements: 

porth

Meaning: 
cove, gate, harbour

Ewstek

This refers to the name of a person: 
name
Elements notes: 
<porth> 'cove, harbour' + <Ewstek> personal name