The Happy Valley set was a group of hedonistic, largely British and Anglo-Irish aristocrats and adventurers who settled in the "Happy Valley" region of the Wanjohi Valley, near the Aberdare mountain range, in colonial Kenya and Uganda between the 1920s and the 1940s. In the 1930s, the group became infamous for its decadent lifestyles and exploits amid reports of drug use and sexual promiscuity. In the mid-2000s, descendants of the Happy Valley set appeared again in the news, thanks to the legal troubles of Tom Cholmondeley, the great-grandson of Lord Delamere.