Rodmoor — John Cowper Powys

Rodmoor is, unusually for a John Cowper Powys novel, set in East Anglia, Rodmoor itself being a coastal village.
The protagonist, Adrian Sorio, is a typically Powys-like hero, highly-strung with only precarious mental stability. He is in love with two women - Nance Herrick and the more unconventional Phillipa Renshaw.
This was Powys second novel, published in 1916. It deploys a rich and memorable cast of characters.