Charles Stuart, Duke of Cambridge (1660%E2%80%931661)

Charles Stuart was the first of four sons and eight children born from the marriage between James, Duke of York and his first wife, Anne Hyde. He was styled Duke of Cambridge, but never formally created so, because he died so young.

However, Charles II of England, James brother, approved of the marriage and the wedding between James and Anne was held onSeptember 1660 in London. Charles was born onOctober and was baptised onJanuary 1661 at Worcester House. However, he died before reaching the age of one, after becoming ill with smallpox. He was buried in Westminster Abbey, onMay 1661. He died before the patent for this title was passed and his younger brother, James was formally created Duke of Cambridge. After James death in 1667, at the age of three, another younger brother, Edgar was styled as such, but he, too, died at the age of three and all titles became extinct until the birth of another son, also named Charles, in 1677.

Source: Wikipedia