Groby owned by the Grey family whose estate included Bradgate Park. Sir John Grey of Groby married Elizabeth Woodville. After his death, in battle, she married Edward IV of England. Bradgate Park was the childhood home of Lady Jane Grey, who became Queen of England for nine days in 1553. The Grey family held the barony until it was forfeited in 1554. Thomas Grey, Lord Grey of Groby became MP for Leicester in 1641 and fought on the side of Parliament in the English Civil War. In 1649 Grey was the only aristocrat of the 59 signatories of the death warrant
Bradgate Park topped by vertical pales of oak. These first ditchworks cross the River Lyn east of the Little Matlock Gorge. A parker, living in a moated house, was the only occupant, maintaining stocks of deer for the lord of Groby Manor to hunt. The park was greatly extended by the first marquis in the late 15th century, to occupy land previously farmed by both Newtown Linford and the now lost village of Bradgate. Lichen dating of the dry-stone walls suggest that the north and west boundary walls were built in the 17th and early 18th centuries, when Bradgate was still occupied