 By 1801, Wells had property worth an estimated £200,000 and was married to Harriet Este (1780–1820), the only daughter of Charles Este, a former chaplain to King George II.In 1802, he bought Piercefield House, Chepstow from Colonel Mark Wood, after agreeing to buy it for £90,000 over dinner.Wells added to Piercefield until it reached almost 3,000 acres (12 km²).