Henry Cavendish was born in Dec 1550, the eldest son of the politician and courtier Sir William Cavendish and the wealthy heiress Bess of Hardwick.
His father died on 25 October 1557, when the young Henry was only 6 years old.
He was raised with his younger brother William at Chatsworth House, which was completed by his mother in the 1560s, where she lived with her fourth husband, George Talbot, 6th Earl of Shrewsbury.
 
On 9 February 1568, at the age of 17, Cavendish married Grace Talbot, the eight-year-old daughter of his stepfather.
The marriage took place in Sheffield, but it was not a happy union and the couple had no children.

Upon attaining his majority, Cavendish received the income from the lands settled upon him by his father, income which had until then gone to his mother, who had been granted his wardship.
Henry Cavendish was born in Dec 1550, the eldest son of the politician and courtier Sir William Cavendish and the wealthy heiress Bess of Hardwick. His father died on 25 October 1557, when the young Henry was only 6 years old. He was raised with his younger brother William at Chatsworth House, which was completed by his mother in the 1560s, where she lived with her fourth husband, George Talbot, 6th Earl of Shrewsbury.  
On 9 February 1568, at the age of 17, Cavendish married Grace Talbot, the eight-year-old daughter of his stepfather. The marriage took place in Sheffield, but it was not a happy union and the couple had no children.
Upon attaining his majority, Cavendish received the income from the lands settled upon him by his father, income which had until then gone to his mother, who had been granted his wardship.
Henry Cavendish (politician)