It is not clear why Dartmouth, on the opposite side of the river Dart, developed so much more than Kingswear. Travellers arriving by sea preferred Kingswear as a landing place on their way to the tomb of Thomas à Beckett in Canterbury. This is why the parish church is dedicated to St Thomas of Canterbury. The church was rebuilt in 1847.
Kittery, Maine takes its name from a house called Kittery Court in the village.
Links:
GENUKI, Colin Hinson's UK and Ireland Genealogy website
Kingswear
Devon
About the Fairfield Family
Shapleigh
Treworgye