The Quiet Gentleman by Georgette Heyer
When Gervase Frant, Seventh Earl of St Erth, returns at last from Waterloo to his family seat at Stanyon, he enjoys a less than welcome homecoming. Only Theo, a cousin even quieter than himself, is there to greet him - and when he meets his stepmother and young half-brother he detects open disappointment that he survived the wars. But the dangers of the Lincolnshire countryside are quite different to those of the battlefield.
Georgette Heyer was the most successful and best-loved novelist of her day, and The Quite Gentleman displays all the skills which won the hearts of her large and enduring audience.