Hamer v. Sidway - The uncle Story

On March 20, 1869, William E. Story had promised his nephew, William E. Story II, $5,000 dollars if his nephew would abstain from drinking alcohol, using tobacco, swearing, and playing cards orbilliards for money until the nephew reached 21 years of age. Story II accepted the promise of his uncle and did refrain from the prohibited acts until he turned the agreed-upon age of 21. After celebrating his 21st birthday on January 31, 1875, Story II wrote to his uncle and requested the promised $5,000.

Fonte: http://en.wikipedia.org/wiki/Hamer_v._Sidway