Shadwell v Shadwell (1860) 9 CB NS 159; 142 ER 52:

Material Facts:

An uncle promised to pay his nephew £150 a year until the nephew’s income reached 600 guineas if the nephew married his fiancé. After the uncle’s death, the nephew sued his uncle’s estate for the remainder of the payment.

Issues:

1. Whether the performance of pre-existing duty is sufficient consideration for another promise.

Holding:

1. Performance of pre-existing duty is sufficient consideration for another promise.